#3
I like my x2 wireless. Great cable like sound and very reliable. I have never had it drop out.
My Gear
Guitars:
-Gibson Les Paul Tribute (Bare Knuckle Nailbombs)
-Ibanez "lawsuit" Les Paul (Seymour Duncan Pegasus and Sentinent)
-Ibanez S470 (Dimarzio D-sonic and Humbucker from Hell)
-PRS SE Custom (Guitarforce Black Diamond and Lord of the Blues)

Amp:
Marshall TSL100
EVH 5150III EL-34 50w
Marshall 1960a cab

Effects:
Dunlop 535q wah
Boss Super Chorus
Bogner Uberschall
Ibanez DE7 Delay
Electro-Harmonix Power Booster
Fender PT100 Pedal Tuner

Strings:
Ernie Ball Skinny Top/Heavy Bottom 10-52
#4
Sennheiser ew372G2
Shure ULXS14
Shure SLX

All great setups

The line6 one isnt all that bad and normally I dont think of line6 as a higher end company. They are starting to put out some good products these days.
#6
As far as wireless goes, you get what you pay for. I would be skeptal to get any wireless under 600 bucks. All the damn money i spend on guitars, amps and effects, last thing I want is to give them a bad signal from a crappy wireless. Best advise I can give is to spend a good amount of money. Wireless is the one area where you do not want to go cheap.
Framus Cobra
Marshall JCM 900
peavey 5150

Mesa 4x12