If you want a fun SE you have to have more power like the power a Tower 75 can give. It opens so many more posibilities for you than just putting around with a weak 46 or 50. I like your counter balances and when I build another I will give that a shot. I have just finished an Ultra Sport Plus 40 that I mounted a Super Tiger 90 on the nose and modified the fuse a little which included lengthing it by 3 inches. The Ultra Sport has the counter balanced surfaces and a longer wing. It is remarkable what these little 40 size planes can indure. I must say the Something Extra is my favorite plane of the two.