this is something you can never know until youve got the toy in hand. I have 4: lugs/cyb prime/BA and ratchet. i find prime is easily the most satisfying to transform, its reasonably complex though feels solid. Lugs is next even if he almost TOO! simple, ratchets a bit fiddly but hes got lots a great shifting parts and finally with BA you dont have to do much atall and theres no significant parts shifting if you see my point. Im looking at lugnut videos and feeling that hes going to a very good toy to transform. of the ones youve got, which are the ones with the most satisfying TF, which ones are a let down?I'm hoping that grimlock FEELS good to transform but he looks liks he might be quite flimsy, is that the case?? EDIT, actually im going to put rathet second infront of lugnut, his TF is actualy damn sweet, theres a lot going on there for a $10 and once youve got the hang of it its a whole lot of fun.