Originally Posted by
1spunspur
Good answer Billy Kelly, I would also recommend checking to see what's popular at those tracks and parts available at your local hobby shops.
THIS. You can go for whatever is cheapest online or recommended on the forums, but two things you can NEVER beat are; 1) on-site parts support when you need it, and 2) help from fellow racers with repairs and setup. I always recommend taking a stroll around the track you'll be racing at, introducing yourself to as many folks as you can, and asking (or just looking) at what they're running.