RE: World Models Ultimate 40S
I had one for a while. It's a pretty nice plane for the such a low price. With a .46-AX it was plenty fast. The only real weak spot I found on mine was the wing bolt plate. It would come loose even with only slight contact between the wingtip and the ground. Of course the best way to avoid that is to not put the wing on the runway in the first place. As with all of the lower cost ARF's, look it over good and beef it up where necessary.