I prefer the helios because the rx is soooooooo small. It's really nice for 1/12 pan cars. The GFX is probably one of the best charges out there, if not the best. It's easy to use and it;s very durable. Plus you can run your motors in and run your lathe! The GT7 is a good esc, but novak has just announced they are comming out with a new one called the gtx. It wont be out for a couple months, so I would give the quantum competition2 a shot. Like IMPACTPLAYR said, it's very small, and it rocks as an esc. Plus it looks cooler too....
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