price?

more channels, more control... generally speaking. eflight makes some great ones, CX2 and CX3 are well sized coaxial helis, great parts support, outstanding build quality, they are actually 5 channel, but the 5th channel is for turning an optional navigation light accessory on and off.

they have a smaller model also, MCX I think it is, its a micro size, in a dead calm day you can take the CX2 and CX3 outdoors, micro is indoor only.