Vehicle - 2009 Toyota Camry LE Non-JBL. 
Current System - Stock, one rear speaker might be blown.  
Music Style - I listen to pop, jazz, RnB, and country. Absolutely no hard rock, no hard core RnB. I want SQ, but at the same time I want the extra thump. 
Budget - <$800 for everything (fronts, one sub, and one amp).  
Additional Info - I'd like to keep the stock HU, and I already have a 12" enclosure for the sub (specs can be found: http://www.bassforms.com/ProductDeta...ode=BF110CAM06) 
Installation - Any recommendations?   
Things that I am considering: 
Fronts - Polk Audio DB651S http://www.crutchfield.com/p_107DB65...1s.html?tp=105   
Rears - I'm trying to find a used OEM speaker to replace the blown one.   
Amp - 4 channel?   
Sub - JL or Alpine Type R?   
I am looking for your recommendations. This car is my DD, so I just want a basic upgrade.