I have the Dance board.  It has a variety of loops, acid, hiphopp, house, and a few other goodies.  There are also useful drumkits and rhythm sets, plus more vocal fx, pianos, pads, brass hits.  I like it because it is a good all 'round board; not focused on hiphop or house or techno, just a little of everything.  I only have a passing interest in this kind of stuff, so this board works dandy for me.  You might like a more specifically oriented board though, I don't know.  
I have no way to make  mp3 or .wav files, but I could make you a cassette tape of all the loops for you, if you wantd to send me your mailing address.  I also have a mp3 download of the house board, but it is a song created using the board, so it doesn't just go through the loops 1 by 1.  I got it from zzounds.com, but I think they've gotten rid of a lot of their audio samples lately.   I could throw that on the tape as well.  Just lemee know.