Overall it is an incredibly good buy. Compared to V1 they feel tighter, with much better upwind. They also feel harder to handle,not so forgiving but i will get used to that. My biggest gripe is i miss the old style handles.The new front one is very tiring to hold (sweet spot on 4m and 3m is right at the front of both handles) because my hand slips backward, there is nothing in the middle so if i use a harness line it has to make a huge loop that tangles a lot. This handles do not pump as good(flop inward) so it is hard to enjoy the advantage of the stiffer frame. In the sizes 4m and below the strut valve is not needed at all IMHO. But definitely would buy again.