I installed Pioneer TS-A6855's in my Mystique and they sound better than stock, but if you have the money, Crutchfield has decent prices on TS-A6865's and TS-A6895's. The TS-A6865's are $99.95/pair and TS-A6895's are $139.95/pair. You might also consider the TS-P682, which goes for $149.95/pair for the rear doors. Just my .02.
