Re: Recommend a good wireless system...
Shure ULX. I can't tell a difference between a cable and this one. Okay, 15+ years on the road means a serious loss of hearnig above 12KHz..
I use an older VHF Shure Marcad diversity system $180 used. It is reliable, durable, simple as I am and never had a signal dropout. It doesn't sound like my best instrument cable, there is but a very little loss of tone but it's not a problem for me. You know: built-in high-cut filter at 12KHz..
Despite the fact they usually work o.k. I'd suggest not to choose a fixed frequency unit. These new multi-channel systems automatically detect any disturbance in transmission and switch to an another free frequency faster before you can ever notice.
There is an awesome quality but not-so-famous wireless manufacturer called REXER. In the $300-$400 range they do have some killer stuff.
The aforementioned Sennheiser is also good. It is a kiler stuff for the money.
Some people here like that Samson stompbox-sized unit because it's so simple and straight but I hear some more serious signal loss there. With the normal sized amp-topper stand-alone UHF receiver has no such issues as I noticed.
Newer Nady (Encore digi-tru diversity) systems are o.k. for the buck but most definietly you can find better ones out there.
If you lived in Europe I'd suggest checking $400-range "db audio" uhf systems. In my experience sonicaly they are not worse than anything in the price range but I also noticed that some units have signal dropouts. Of course it depends on the outer environment a strong signal source nearby (e.g. a strong radio transmitter ) can cause interference any time.