I just want to restate the advice Korgasm gave: definitely pass on the Techno board for your XP-80. And, yes, do opt for the Hip Hop board instead. The Hip Hop board has TR-808 and 909 sounds just like the Techno board, plus has many more useable percussive hits and ~"broken beats". It has several useable and sequencer-syncable loops (the components of which can be combined in various manners to form new loops) and cool "lo-fi"/toyish dance-type sounds. Furthermore, when it comes to editing sounds, I think a lot of the waveforms used on the Techno board are the same ones used on your Vintage Synth board. Lastly, modifying the 909-ish kick sound on a few of the Session drum kits can give you a pretty good 909 kick emulation.