I-16 has been for a cpl tours now, just started flying the LA5 and I am enjoying that aswell. 109G-6 and P47-25 will always have a spot in my heart as well tho. The p39D too, man there are just so many planes I enjoy flying, maybe that's the reason I have never settled on one plane in particular. With so many choices why limit yourself? The challenge of learning all the different planes is enjoyable(to me)