Digital, my man. Compander-free(no compression/tone suck), 2.4 GHz Spectrum(no real interference), easy set up between transmitter & receiver, you can even get some of them to emulate a cable if you want that sound.
I know there are several brands to choose from, but I think the main players in the digital wireless game are Line 6 with the Relay series(and the XV-D series)and Shure with the GLX-D(and their PGX-D)series. Personally, I just got the Line 6 Relay G50 and it rocks! I'm sure there'll be a bunch of good suggestions coming your way.
Dingwall ABZ5/Dingwall Combustion/Custom Moye 5/GK RB-700II/GK NEO cabs/Bunch o' pedals