I'm a relative newcomer to RC. Jumped right into helicopters and figured I go for something with 6 channels. Ended up buying a Walkera 4G3. Dumped a bunch of money into upgrading it into brushless and never managed to figure out how to get it off the ground.
"Maybe I should try out one of these coaxial deals"
Proceeded to try a Walkera 5#10. Loved that thing to pieces. Brushless conversion done. Learned alot about actually flying helicopters on this model.
Moved on to fixed pitch. Ended up trying a Hirobo Quark SRB. Luckily this thing comes already brushless. Ended up spending a bunch of money on extra parts and lights (needed to tinker something on it). Learned alot about flying fixed pitch on this thing.
I'm now probably what most people would call a Walkera fan-boi. I own a bunch of Walkera gear and helicopters, and am in the process of "getting comfortable" with CP helis on an Align Trex 450 Pro (I'm using Walkera gear to control it though!) but spend the majority of what little hobby time I have working on a variety of choppers: a Lama2-1, a handful of CB100's in various stages of upgrades and modifications, that aforementioned Trex 450 Pro.
I've probably spent more money on tools and parts than I care to think about, and still love to solder the hell out of anything that "be a little bit shorter to save on weight" but there's some satisfaction for me in having done it "the right way" (or so I like to think!)