I went ahead and bit the bullet 2 years ago and got a M11 w/ Spektrum and it's been great. Never had any range issues and I have 10 models programmed into it. I also picked up a Commonsense lipo for it and I swear I charged it only once in the past 5 months. And that's for at least two hours of use every week! As for the RX's I just watch Ebay for good deals and pick them up as needed. Whenever I sell a roller, I always keep my RX's though.