Shure GLXD16, if you play live regularly, prefer a hip pack setup and have the cash for it. Line 6 wireless systems seem to be hit and miss, so I'd stay clear. Sennheiser was my first wireless system, was a good one too, and the XSW-D, but I'm going with Shure as soon as I get my tax return, both for reliabiity and the fact that I prefer a hip pack to a plug in solution.