I've flown Futaba 72Mhz radios like the 4YBF and the 7CAF since getting into the hobby, but last year I decided to go with Airtronics for 2.4Ghz.

The Airtronics RDS8000 is an 8-channel 2.4Ghz frequency hopping radio system with advanced programming and mixing features for aircraft, sailplanes, and helicopters. It's on sale right now at http://www.hobbypeople.net with one receiver for $149.99. Extra 8-channel receivers are available for only $79.99 before discounts.

http://www.rcuniverse.com/magazine/a...article_id=995

It's quite arguably the best value in a spread spectrum 2.4Ghz radio system on the market for under $550.