I have both the Techno and Hip Hop expansion boards, and agree with everyone that the Hip Hop board has the better drum sounds and loops. Both of the boards offer variations of the 808 and 909, I believe. I think the Hip Hop board is just so much more usable. That is the first set of drum patches I use when I desire drums that are a bit less realistic. If you want to create your own drum patches from the sounds, I think you will be very pleased with the results. The Techno card was very diappointing to me. There are a few sounds that I like, but on the whole, the card doesn't compare to the Hip Hop board. Another board you may want to consider, if you want unusual sounds, is the EFX board.
DanO