Pioneer > Alpine
Personally ive had good experiences with both.But id have to say i like the way the pioneers look and play cds better. My mx6 had a nice pioneer that was an model 03 and it would play the most scratched up cds perfect and wouldnt skip and had alot of nice features.I currently have an older 03 version of the alpine that u listed in my integra and it works great and has tons of good features than can totally change the way the music sounds with the mx mode. But it does skip on certain cds .My buddy also has last years model of that alpine u listed and it wont play a cd with like any scratches on it and he ended up using an older poineer and liked it alot more.