Can't you use the radio you already have?
Or do you just want to have a dedicated "multi-rotor" transmitter?
That Naza complete set is really nice.
Top notch hardware right there!

Carlos has the HobbyKing Pilot Mega V2.5 that's said to be really decent.
It'll be going in his H.A.L. quadcopter that i'll be building for him while he's away on his two week vacation.
He's going to need to get a GPS module for it though as it doesn't come with one.
People recommend the UBLOX LEA-6H GPS Module w/Built-in Antenna (2.5m Accuracy) V1.01
These quads can get really expensive when you want the "good stuff" on them.
