Hi virtual ray:
I am glad to hear you like
the JS-5! I am trying to get MusiciansFriend.com to match an internet price I found lower than their catalog. But anyhow, I sold the R-70 mainly because I need the $$ toward purchasing the Boss Jam Station JS-5. I am guitarist and I like to play 12 bar blues and variations and it was too time consuming to create a separate drum track, then play a bass track, etc. I want to concentrate on the guitar solos.
There is no doubt the R-70 is amazing, extremely flexible, and with the positional pad, and parameter adjustments, just about any drum set sound seems possible.
Unfortunately, I am not particularly MIDI literate. Someone gave me a version of Cakewalk 5.0, and I could not get it going properly. I hope to get a Fostex digital 4 track soon and just save songs to the Zip Drive.
There were, however, at least 50 pages on the MIDI setups in the manual and I am sure when you get the manual, your questions will be addressed.
My recording configuration was create a R-70 song. Play the R-70 going stereo into (old) Fostex X-24 at the same time I played an electric bass through
my Digitech RP-7 (guitar processor that contains a tube for warmth) and that was recorded on tracks 1 and 2. I then would play guitar through the RP-7 into a Ampeg Super Jet Amplifier and onto track 3 via microphone. And finally the most fun part, lead on track four. Hopefully, the JS-5 will help eliminate some steps so the journey to the 4th track will be quicker

.
What I do remember with the R-70 is that you can assign any of the 210 pre-programmed and 32 user-programmed sounds to the 16 key pads. Pad Assignment: Press ASSIGN, then press 1. While holding the SHIFT down, select the Pad Group by pressing PAD BANK. Select the Pad Bank by pressing PAD BANK. Press the key pad that you want to assign a different instrument. Specify the new instrument with v or ^. Repeat for the others and hit EXIT when complete.