Its really all just brand snobbery, exact same comments used to be made about the Hobbywings esc's etc etc etc, unless they were the MuchMore or Speedpassion rebrands, they were somehow OK

I have had both GT2 & Specktrum DX3s.
GT2 works just as well , transmitter has less functions, thats all.
GT2 does cause some interference in some Spektrums, mine for example
THE FAULT IS THE SPEKTRUMS DESIGN, not the GT2.
No other brand is affected. DSM/DSM2 is old tech & cannot cope with a crowded 2.4G radio spektrum.

for example
http://www.rctech.net/forum/8723206-post739.html

Have a look at the forums where people who know what they are talking about(radio techs) criticize the Spektrums .

Of course a $300 radio will be better than a $20 radio, that doesnt mean the $20 radio is junk.
If you guys are happy to be ripped off on the price of receivers, then I guess thats OK .