what is the best american DJ CD player for mobile DJs?

Your opinion or what you heard or read????

I have used one CD system before, but it was long time ago. I wasn't really impressed, but when I heard someone else on it and he was good I thought maybe because I didn't know how to use it. It was a system similar to PSX but it came before.

It depends on your needs...
If you want all of the latest and greatest bells and whistles, then the flagship CDI-500MP3's or Velocity is your best option.

If you are looking to save a few bucks, and save some space, wait for the new MCD-710 to hit the shelves.

MCD 710 MP3/CD
SPECIFICATIONS:
• Plays MP3, CD discs and CD-R discs
• Fader "Q"-Start
• Folder Search
• MP3 track listings
• BOP Effect
• Seamless Loop
• Master Tempo
• 20 sec Anti Shock
• Flip Flop (Relay playback)
• Pitch (+/-4%, +/-8%, +/-16%) +/-100% for CD
• Pitch Bend
• Advanced cueing with track search by frame
• S/PDIF Digital ourput for each player
• Bright VFD display
• Single/Continue and Time view
• Reads CD and CD-R media