Def Techs are not a bad choice, even owned a pair a few years back (bp10's), but for under a grand, you can't lose with monitior audio, they constantly win "best value, best bang for the buck" awards. you should check them out.
www.monitoraudio.com I would suggest the bronze line based on your budget. B2 up front, bronze center, and BFX for the rear...all within your budget.
my 02