As Cora asked, do you have a wish list (or an upgrade list)?
I put one together for hunter shoulders (based of the model for hunter that RAWR uses). Your shoulders are high lighted in red.
| Name | Source |
| Windrunner's Spaulders of Triumph | Trial of Crusader 25 (H) |
| Shoulderpads of the Snow Bandit | Anub'arak 10(H) |
| Duskstalker Pauldrons | 45 EoT |
| Windrunner's Spaulders of Triumph | Trial of Crusader 25 (H) |
| Shoulderpads of the Intruder | Steelbreak - Ulduar 25(hard) |
| Pauldrons of the Shadow Hunter | Anub'arak - Trial of Crusader 10 |
| Treacherous Shoulderpads | XT-002 10 |
| Pauldrons of the Devourer | 45 EoT |
| Conqueror's Scourgestalker Spaulders | Yogg-Saron 25 |
| Iron-studded Mantle | Ulduar 25 |
| Windrunner's Spaulders of Conquest | 30 EoT |
| Shoulderpads of the Monolith | Kologarn - Ulduar 25 |
| Pauldrons of Concealed Loathing | Palantris - Trial of Champion (H) |
| Shoulders of Misfortune | Ulduar 25 |
| Shoulderpads of Secret Arts | Razuvious - Naxx 25 |
| Shoulderpads of the Infamous Knave | Black Knight - Trial of the Champion (H) |
| Relentless Gladiator's Chain Spaulders | PvP |
| Mantle of Fiery Vengeance | Flame Leviathan - Ulduar 10 |
| Ironaya's Discarded Mantle | Auriaya - Ulduar 10 |
| Spaulders of Egotism | Razuvious - Naxx 25 |
| Spaulders of Resumed Battle | Noth - Naxx 10 |
| Valorous Cryptstalker Spaulders | Loatheb - Naxx 25 |
| Upstanding Spaulders | Sartharion - Obsidian Sanctum 25 |
| Pauldrons of the Abandoned | Thaddius - Naxx 25 |
| Furious Gladiator's Chain Spaulders | PvP |
| Spaulders of the Careless Thief | Telestra - Nexus (H) |
| Heroes' Cryptstalker Spaulders | Loatheb - Naxx 25 |
| Concealment Shoulderpads | Sartharion - Obsidian Sanctum 25 |
| Pauldrons of Havoc | Four Horsemen - Naxx 25 |
| Deadly Gladiator's Chain Spaulders | PvP |
| Massive Spaulders of the Jormungar | Palehoof - Utgarde Pinnacle (H) |
| Trollwoven Spaulders | Crafted |
| Pauldrons of the Deafening Gale | World Drop |
| Spaulders of the Abomination | Meathook - CoT:Stratholme (H) |
| Hateful Gladiator's Chain Spaulders | PvP |
| Ceremonial Pyre Mantle | Ymiron - Utgarde Pinnacle |
| Spaulders of Frozen Knives | Rep |
| Pauldrons of the Glacial Wilds | Icehowl - Trial of Crusade 10 |
| Pauldrons of the Spirit Walker | Icehowl - Trial of Crusade 10 |
| Spaulders of the Black Arrow | Vendor |
| Savage Gladiator's Chain Spaulders | 30 EoH |
| Spaulders of Skillful Maneuvers | Urom - Oculus |
| Eviscerator's Shoulderpads | Crafted |
| Virulent Spaulders | Crafted |
| Observer's Mantle | Ulduar 10 |
| Sprinting Shoulderpads | Nadox - Ahn'kahet (H) |
| Shoulderpads of Abhorrence | quest |
A few things should be apparent from this list,
- Pauldrons of Concealed Loathing or Shoulderpads of the Infamous Knave are available from running Trial of the Champion (heroic). These shoulders are ranked 13 and 16, respectively, for hunters and Pauldrons of Concealed Loathing are ranked higher then anything out of Naxxramus 10 or 25
- Windrunner's Spaulders of Conquest (ranked 11th) is available for 30 Emblems of Triumph -- that is 15 days of doing the daily heroic. This is the T9-iLevel 232 piece. Again, this is better than anything that drops out of the first Tier of raids (naxx, eoe or os)
- Duskstalker Pauldrons is the third best shoulder in the game for hunters, and is available for purchase with Emblems of Triumph, 45 in this case which is 23 days of doing the daily heroic. Notice, that this item is only beaten by items that come of heroic mode Trial of the Crusader.
If I were you, and looking to upgrade the shoulder-slot item, I would be running heroic Trial of the Champion every day (giving me 7 shots at an upgrade per week, versus the one-shot at an upgrade from Naxx-25 or Naxx-10).
Something else to note is that there is only one upgrade that drops out of 10-man Naxx (
Spaulders of Resumed Battle), so for the amout of effort involved in getting a group together, the about of time it takes to run Naxx-10 (it still takes 3 hours or so to do a full clear of Naxx) and the chance that the item
might drop in my opinion it is not worth the time to try and farm it up (now if there where 5 or 6 potential upgrades then it would be a different story).
Also, the items I can get from EoT are "sure things" -- we get 2 EoT per daily heroic, and then go to a vendor and buy stuff

-- no relying on a RNG monster to just happen to select the item that we want from a loot table.
Finally, if you desperate to upgrade a slot (and in your case the shoulders have to go

), don't overlook the stuff you can get with badges or rep. In fact, any of the following shoulders would be an upgrade from what you currently are wearing
17.
Relentless Gladiator's Chain Spaulders PvP
25.
Furious Gladiator's Chain Spaulders 50 EoT
26.
Spaulders of the Careless Thief drops from Telestra in Nexus (H)
30.
Deadly Gladiator's Chain Spaulders 46 EoC
31.
Massive Spaulders of the Jormungar drops from Palehoof in Utgarde Pinnacle (H)
32.
Trollwoven Spaulders Crafted
33.
Spaulders of the Abomination drops from Meathook in CoT:Stratholme (H)
34.
Ceremonial Pyre Mantle drops from Ymiron in Utgarde Pinnacle
35.
Spaulders of Frozen KnivesSon's of Hodir Honored, which you should already have...hell, you should be exalted with these guys.
36.
Spaulders of the Black Arrow Ebon Blade Revered
37.
Savage Gladiator's Chain Spaulders 30 EoH
38.
Spaulders of Skillful Maneuvers drops from Urom in Oculus
39.
Eviscerator's Shoulderpads Crafted
40.
Virulent Spaulders Crafted
------------------------------------------------------------------------- Now, I can not say if the above pattern will hold true for every slot in the game. But this is why we stress having upgrade lists so you know where you should be focusing your attention to get upgrades.
This is the type of list that I think everyone should have ... we need to know where the upgrades are and attempt to maximize our time.