Yes, I amd moving up to a .50 soon, and that is one upgrade I am going to make. I think I'm going to go with the futaba 9252 heli servos. This upgrade to a .50 is going to be a costly one. I originally figured to go from a .30 to a .50 wit about 425 bucks with motor, conversion kit blades and a few hop up parts. But seems like I'm going to have to replace these 537's also. More money
. However can get them at some pretty good deals online. Thanks for the info, I bought this heli used and it had the JR 537's on it. They will be on ebay whenever I get the new ones.
Jeff