I have the RC10GT. It is a great truck. You can't go wrong with it. I am an associated fan so i would get anything associated over losi, but that is just my opinion. If you get it with the
OS CV-X ( which is an option ) that would be great to start with, but later you will deffinatly want to upgrade to a more powerful engine.
There are many other cheaper models that you can get from traxxas or duratrax but only get those if you wont be racing.
The three really raceble nitro trucks are the RC10GT, XXXNT,
MST-1, and Kysho Ultima. the MST-1 is new, but the most popular ones are definatly RC10GT and XXXNT. I don't like to admit it, but the Losi XXXNT wins a lot more races than the GT.
Like Im2lazy said, it depends on what ur hobby shop supports more.