For a nitro buggy, I would reccomend getting a Traxxas Rustler or a Jato 3.3 . I have yet to drive the Jato 3.3 as its still in the mail, my brother recenttly bought it and its being shipped now should come sometime this week, I can't wait!
As for the Rustler its a great nitro buggy or truck what ever you call it, Its one of the first nitro engine I ever drive. The one me and my brother has goes about 65 mph and dose whieeles all day .
As for the exceed , I have a electric one and I don't play with it too much... I don't think there good trucks but hey I'm new into the sport and just trying to help out if I am wrong please do correct me .