I had the 40 for a while but I have to say I was a little disappointed with it. It was the ARF and whilst it flew pattern style aeros very nicely it didn't do 3d very well. Also with a piped Rossi 53 and a 120oz servo on the rudder it wouldn't knife edge loop! This probably had something to do with the fact it was 6.5lbs!

But, if you're building the 120 from a kit and you can keep it light it should be good. If you're well into your 3d then I'd suggest modifying the sufaces to make them bevelled and MUCH bigger! Good luck......

Andy