I have all three. I suppose theoretical hull speed will tell you that the V10 is faster than the V10 Sport which is in turn faster than the V9. Real world factors such as water conditions and paddler size will skew the results, however. Throw in some ripples and a boat wake or two and a less powerful paddler in a V9 could overtake a V10. The three are close and it doesn’t take much to equalize things.
i don’t ever paddle my V10. It isn’t made for short people. I can barely reach the pedals. Maybe I would be faster in it on glass, but my races never have glass like water.
I’ve only been in the V9 for a couple of weeks. As has been reported by others, I can confirm that it is about as fast as the V10 Sport. Faster? For me, I don’t think so. If the water is so rough that the V9 has an advantage then I suppose I would be even better off in the V8 Pro. The V9 does have those sweet carry handles. If I’m in a race with portages or a triathlon, those handles will help immensely. Running around with V10 on the shoulder is a good way to drop your boat. Ask me how I know.