ORIGINAL: Dr1Driver
Computer radios are cheap and have some great features. Take a look at the Hitec Flash 4 or Flash 5. Both are excellent radios for the money. There's also the Futaba 6XAS, which is a great radio, but possibly more than you need.
There's also the Futaba 6EXAS and now a 4 channel 4EXA. You can get the 4EXA with a micro receiver and 3 S3108 servos for $140. Apply whatever Tower discount is in place at the time and it's not a bad deal.