Here's my recommendations, based on what you've already read:
The Bounty Hunter Wars trilogy
I kind of hated that trilogy. It's not as bad as the Black Fleet Crisis, but aside from the bits with Fett and Dengar, it was just boring. The chapters with Xizor are the only bits of a Star Wars book I've skimmed over without really reading.
The Young Jedi Knights series
Surprisingly good for YA books.