I got the spektrum system for my R-1, works excellent. Bought another receiver 3 weeks ago. Was defective when I got it. Shipped it off to Horizonhobby.com, they received it on 4/11/04. Unfortunately, they aren't returning my email inquiries regarding it.
I heard there has been a rash of bad receivers that they let loose on the public, and I'm one of the "lucky" ones. Nothing like spending $85 on an item, and not being able to use it for over 3 weeks (and counting!) Right now I'm not especially happy, we'll see how horizon handles it.