I like my x2 wireless. Great cable like sound and very reliable. I have never had it drop out.
My Gear
-Gibson Les Paul Studio
-Ibanez "lawsuit" Les Paul
-Ibanez S470
-PRS SE Custom

Marshall TSL100
Marshall 1960a cab

Dunlop 535q wah
Visual Sound Liquid Chorus

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.
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