I like the Dragon micro tank. It is 1:72 scale. The detail is incredible for it's size/price. It only has basic driving functions, but it is powerful for it's size, the tracks (rubber) hold up, and it has pretty good range. Turret does not rotate under RC and there is no IR but IR for tanks this sze really doesn't work.
I love driving this thing across my terribly messy desk, youd be amazed what it can climb.