I just wanted to post a thread for those who might be otherwise curious:
I run with a Yamaha PS2500 (after a Marantz Monoblock failed on me). I picked it up for less than $400 new with warranty and had 30 days to try it out. My LSi 9's are driven with them. The Yamaha is quiet and more than suitable in room if you want and the aesthetic, while not beautiful, isn't garish either IMO.
I run a Behringer EPX 2000 for my sub. It does a stellar job.
So post any Pro-audio or affordable consumer amps for those that may have the desire for great audio but have to mind the pennies and may not want to chance used (no warranty) gear.