I work for about 3-4 different companies that are all interested in new wireless gear, as am I. It is such a crappy time right now to own and need wireless...... I tell everyone to hold off on buying for as long as possible until the auction is done and the new rules set in place. Plan on going fully digital or at least hybrid in the VHF band and buy as low in the frequency band as you can.
I am so peeved right now. 8 years ago or so I owned two Sennheiser Handheld mics in the 700hz band. That got auctioned and I had to sell them off at a loss and replace them with new units in the 600 band, which is now being played around with...... If I loose the use of this set of Sennheiser units, I will be beyond mad. Granted 4 units isn't a huge inventory, but it is certainly not fun to have to replace a perfectly fine unit because the FCC has money to move around.
I bought some Line 6 V75 units and while they do perform like a wired mic, they are not as reliable as the higher end units I seem to have to replace every 5 years because of the FCC.....
Wait, go digital and or buy in a range that TV and cell phones can't use.