hey all i'm in the market 4 a new headunit for my integra

i have about 250 dollars and am in the market for a cd/mp3 player. i'm thinking about the

Clarion DB625MP
Pioneer DEH-P7400MP
Alpine CDA-7894

I'm not so sure about the alpine because i don't know how much of a discount i can get on the HU but for the other two i can get it around 200-300 can u all tell me your opinions and if any other recommendations for a headunit..... thanx all