for alot of power for the money I would say JBL 1200.1 for around 270, I can't remeber the website,
www.ikesound.com has it also for a good price
the 600.1 might also be a good choice depending on what rms is needed
the 1200.1
-4 ohm, 600 watts
-2 ohm, 1200 watts
the 600.1
-4 ohm, 300 watts
-2 ohm, 600 watts