I've used most all the big name brand radios. The 4PKS is my favorite. The 4PL is my second favorite. It works great on crawlers and my big 1/5 gassers. I only use Spektrum on electrics. Spekys don't like the ignition system on gassers. Too many glitches.

ok i have narrowed it down to 2 tx. either the m11x or 4pks. besides the way they feel in my hand are there any performance differences that make one better than the other? i mainly race club races and a few big races a yr.