I can keep up quite well with the RT5, which is the newest ST truck kit you can buy (and also a very good kit, Give credit where it's due). ST truck is taking off again here in SoCal, which is a good thing, keeps the shortbus drivers away from us. Will have to wait to see how the new Losi does, but in all of the races I have seen in the hands of team drivers, they still havent gotten it figured out yet.