Airline Synth is great!
The sound quality is great. No belt pack is the best! The body is more rugged than the AKG bug. The Samson doesn't swivel, you just screw the input plug into one of two holes on the transmitter and connect to the guitar. This takes a couple of seconds, so it's quick to go back and forth between different guitar types. It runs for a very long time on alkaline batteries, I do three 1-hour sets each night and the battery lasted for 4 gigs. I have not tried rechargeables yet. With 300 channels to choose from, I should have no problems using this unit at Cowboys Stadium or other places with lots of DTV broadcast in use. The unit comes with everything to rack mount the receiver, which is very cool. None of my previous wireless units ever had that. The range is great, you can get all the way from the stage to the bar!
Cons - setting a new frequency was a little tricky, at least for me. When the receiver claims a new channel, it tells the transmitter using IR. The transmitter must be turned on at the right time to pick up the new channel info. It was tricky, I had to read and re-read the directions to get it right. With a little practice, I'm good at it and it works easily.
I was hoping that this unit would not receive the random "hiss" blasts that my previous units did when the transmitter is off, but I guess that's just a wireless thing that happens when other loud things are broadcasting nearby (Airports, TV Stations, etc.). Sometimes it happens, other times it doesn't. It isn't any worse than my previous units, just not any better.
Overall, this is the smartest wireless solution I have seen for guitar and it will be in my rig for a very long time.