those are great choices, i like em all! but from my experience i would say the lst2 or the revo. i read many different forums, about all the trucks and my least favorite peeps drive a savage.. seems to me that the savage is the best choice for a youngster who cant get replacement parts as easy as the older crowd. its a tank, seems really tough. you have to consider what kind of people you will be dealing with because you will spend alot of time on forums.
the lst2 seems to be a sweet truck, i really like it. but i dont like the idea of the weight of it. no matter what motor you put in it, its hp to weight ratio isnt that good. then consider you can take the small block out of the revo and slap a big block in it and have the crazyest mt around! mine has a os 30 in it! its crazy, i got to play with a lst2 last weekend and it wasnt even a contest... we got a couple drag races in and the poor lst looked big and heavy. side by side it looked like a top fuel funny car against a street legal camaro! he was floored and i was blipping the throttle makin him look slow. sure he had the stock motor, but nothing he could bolt into that truck would be able to make up the difference.
what i did notice tho was how stable the lst was on uneven ground, i bet it is a great racer! the revo is a little too light when ya put a bunch of hp in it, but if ya like flat out insane power itll put a smile on your face! it freaks out when ya hammer the throttle!
so with that being said, flip a coin! heads lst2, tails revo! ya cant go wrong!!!