I have a Mayflash SS adapter (the type with 2 saturn ports to USB). So far it's been great, I'd definitely recommend it.
Question is - has anybody tested this with a multi-tap? I'd test it myself, but I don't have any multi-taps lying around. I was thinking of having a bomberman session, and acquiring some multi-taps, obviously don't want to if it won't work.
For the record I own the console and originals anyway but I've been playing all my saturn stuff on Mednafen recently, which is great - even Garegga works a charm (blank menu screens aside). I can keep all my originals in their boxes stuffed in the cupboard