Getting started with telemetry... what receiver?

I'd like to start using some simple telemtry on my helis. I have a Devo 10 and a Jumper T8SG V2. Most of my stuff flies on DSMX but I'm open to other options. Initially I was looking at the SPM4649T but I'd love a cheaper option like the Turnigy ia6c. Most important is pack voltage, next is signal strength, but I wouldn't mine having some addtional data like rpm and bec voltage.

Any thoughts on what receiver is a good bang for the $?

If you don't mind Flysky then FS-IA6B is a good, cheap RX with telemetry. With a simple hack I can now get pack voltage and RSSI. Quite happy with it.