All things considered you can't beat a WM Mustang. I have two of the 40 size mustangs. A Dago Red with a Saito .72 in it which give me all the power I want/need for that one and a yellow one with an OS 61 2s in it for racing. It goes like a bat out of you know where.
I am flying off asphalt and have never had a problem with the retracts.