I just purchased the Futaba 4PLS system after much research. I must say that I was one click away from purchasing the Spektrum equivalent radio however when I heard that they might get interference with the FlySky radios out there, I just about had a heart attack. I'm not sure if that is still the case but I live in a metro area and I'm sure I would run across someone with a FlySky radio at some point and just my luck would be that he would be in my race / at the same track as I am at the same point in time. Back when I was younger and did a lot of RC I had several futaba radios and I loved them. I was also 16 - 20 years old and didn't take care of my stuff that well and they lasted and worked well, so when I saw the 4PLS on ebay for $200 I grabbed it. My local hobby shop only sells Spektrum so they lost the sale when they told me they could order it and I would have it in a week. Sorry, no stock, no sale. I can order it myself and have it shipped to my door, save the sales tax and probably pay less.