RE: Stock Speeds:
Here's my thought. Get what you think will make you happy for the next 3 months because eventually you'll want something else as well and you'll start building a collection of vehicles. Also, as for "the fastest car I can get" I say GO FOR IT! The thing will only go as fast as you make it go so as long as you respect the fact that you CAN break peoples legs with these things, you'll do fine.