I had looked at the Tiger 2, but after I had built my sons Sig Kadet, I was very impressed with the way his flew, and it is very solid, except in the wind of course. The Kadet is a floater, for sure. I thought that the Tiger and 4* looked very similar in design, can you tell me the differences? How about what to power it with? I heard the 4* shines with .90 on it.