I am on 2.4. The reason for the change is I wanted to add an optical kill. I find them handy. So, I just bought the BEC version to help save weight. I was kind of thinking of throwing a 3s LiPo in there. For this size plane, I am not really interested in adding another switch. This is not a 50cc gasser. Just a small 62" wing. I already have enough crammed in there.