Alpha Protocol has faults, but it's easily one of my favorite games.
New Vegas is way better than Fallout 3.
KOTOR II > KOTOR.
Neverwinter Nights 2: Mask of the Betrayer was an absolutely incredible expansion.
Dungeon Siege III is different -- yes -- but I honestly think it's a fantastic ARPG in the vein of the Dark Alliance and Norrath games.
And speaking of Dark Alliance, most of the Obsidian team were Black Isle and worked on Dark Alliance with Snowblind, and then they were completely responsible for Dark Alliance II. Black Isle also developed the masterpiece known as Planescape: Torment. Oh, and let's not forget the Icewind Dale series of games.
A lot of these same people worked on both Arcanum: Of Steamworks and Magick Obscura and Vampire: The Masquerade – Bloodlines.
I don't care for Bethesda at all, but Obsidian is easily one of my favorite studios.
Dungeon Siege III didn't even have good loot like Dark Alliance. Arcanum was terribly unbalanced and buggy. They have potential but they just seem to rush their games. When they were Black Isle, they were defiantly better as they made Planescape but they'll never revisit that glory in my opinion.
