RE: Speed on the cheap???
I have the Viper, sonic 500, and the predator. I am building the sonic 500, so can not say much about it, but the predator and Viper are excellent and cheap. The viper is very well build and flies very fast. float forever, but at high speed. The predator is not quit as fast, but float good while bleeding off speed better. Get a viper and get someone that has flown v tails to take her up first. Not to say you can not handle it, but the quickness is a surprise. I have a Rossi Q500 in my viper and I have a blast. Fastest at my field by far.