Sometimes people with strong brand loyalty will gloss over issues with their chosen brand. It's not that the OP is implying anyone is dishonest.

I've only read about two issues with FASST. The first was the GUID problem with the 6EXs that rlipsett mentioned. The second was the 6014 receivers having failures in hot weather. Hobbico's response to the first issue was impressive, to the second... not so impressive.

The thing about 2.4ghz setups is that people sometimes get sloppy, thinking that the system is fool-proof. Battery requirements are a lot higher between the computerized receivers and more powerful digital servos. The days of flying all afternoon on a 600mah pack are gone. One thing that hasn't changed is how eager some are to blame their radios for bad setups or uncooperative thumbs.