Just picked up a wireless unit the other day, with my main requirement being price and specs low enough to handle bass.
The only thing I could find which was remotely close to my price range and had the frequency response specs that would definitely handle the lows was a Shure UT14. Everything else either did not go low enough in frequency response (UT14 states it goes down to 20hz!) or was way too expensive (UT14 on MF is $259.99 which GC matched). 20hz is the lowest I've seen on these low-mid priced units.
GC told me they were on clearance because the new channel changing PGX units were replacing the UT14. The PGX units at GC were decently priced (they offered me $349.99) and I considered it, but I made them crack open the box and the book, and found the frequency response went to 40hz

. Yeah, I know I play a 4-string and 40hz *should* be able to handle my Sterling (theoretically) but a few months back, I bought a Carvin U7000 UHF unit from a cool guy here on TB and while the unit functions great, the lows and feel really were sucked out way too much for me to accept, as much as I loved the way the thing worked. And that unit stated it went to 50hz. So I felt 40hz just wasn't safe enough.
Anyway, I haven't tried the Shure UT14 yet, but I will tonight, and from all reviews online from people who play bass, they state it does great. We shall see. I'll update with my review on the unit soon. If a 20hz spec and Shure quality still doesn't cut it, I'm giving up on wireless until I find an X-wire lying in the middle of the street or gets shipped to me by accident
-T