Electric or gas? With electric the HPI's will be more competitive out of the box than most Tamiya's. Not to say that Tamiya's aren't competitive, they are awesome cars. With that being said, I recommend Yokomo, MR4-TC, or Associated's TC3. Both cars are highly competitive and have good support as far as parts. They both even have upgrade kits in which they include most of the hop ups already. Not to mention even more hop ups. Check them out (www.teamassociated.com) and (www.yokomousa.com) Also check at your local track. See what cars the hobby shop around there supports. Nothing worse than having to wait for parts.