I have read these books from this era:
Red Harvest: This is a good book, but it's a horror book in reality. Zombie Sith vs Sith, Bounty Hunters, and Jedi.
Revan: This book takes place after KOTOR 1 and 2 but before this MMO (SWTOR). There will be a lot here you will recognize from this game.
Fatal Alliance: I do not think I like this book. The primary Sith character does a lot of Dragon Ball Z type anger powering and I think that's ridiculous. It really bothers me.
Dang dude you really need to read Deceived then. If you thought the other SWTOR books were even just passable you'll love Deceived.