Sometimes a reference can work when it has nothing to do with the genre you are working with. For instance I mix live gigis too and I might be mixing a heavy metal band. I still use Steely Dan as the reference for setting up the FOH sound.
(because I know it so well and it really helps me get the FOH speakers sounding real nice in the room) Then after that the metal band sounds killer. Most PA's have the subs way too loud. Steely Dan puts all that back into perspective.
Some of the best metal live mixers I have read do this too eg one guy uses KD Lang as the set up reference but mixes heavy metal after.
The last two Steely Dan CD's sound better than all the rest so don't get caught using older albums. They are nice of course but the last two are all digital and have that beautiful snap that lacks in previous albums (On vinyl especially)
Having said that Tangerine Dream also sounds pretty nice for electronic music too.
Amon Tobin sounds good here as well. Well balanced and pretty nice.
Be careful with your car too. No matter how good you think your car stereo might be it is nowhere in the class of a nice set of speakers in a half decent room. Cars hype the response all over the place. It can be very bad. I use the car to check very low end during a mastering session though. If the bass rattles my teeth I know something is wrong down there. What the car does tell me is that really well mastered CD's sound tight down the bottom end, still nice lows but no teeth rattling!