If you had to choose only one rc to keep from all the RC you've had

I'd keep my 5b for sure. After you put some modest upgrades on it,it's amazingly tough. And the size of it is not only easy to work on but it also can run on rougher ground than any 1/8 scales I had. And the ease of running gas and maintaining it is just too easy even compared to BL. Now if someone will make an FG style steering setup to get rid of the slop and give me a tighter turnig radius it'll be perfect!