Its a pretty basic truck and is a decent rc to have to get you into the nitro door. The pro 15 like to get hot and can be a pain to keep tuned in, but like I said, its a decent truck to introduce a newbie to the hobby.
The stampede is like a mini monster truck.. It is kinda like a nitro rustler, but has bigger tires and a few other different parts... It is a nice truck... If you want more power, there are tons of engines out there that will make it fast...
Not to be a dink, but I wouldnt waste the time or money. Get good with the stampede and move up to the maxx or revo. Kinda a stepping stone to a maxx or revo I think.