I can only speak from personal experience, and am slightly prejudiced, but I love running my awesome hpi 106364.
It's such an incredibly fun Savage X 4.6 Big Block, especially with the DX3s I've bound it with.
It's so much fun, I want to acquire another.
But I also have my Align TRex 700 E V2 3GX Super Combo kit and DX6i to play with as well.
Grrrr! Going to be a very long cold lonely winter...
Thankfully I've still got the Parrot AR Drone 2.0 for indoor fun along with the new iPad 3!!