I have a couple of V08's and have used the Profile II's for a few years (I prefer the grey or the oreo one, the bright white I didn't care for). The Profile II fits the V08 great but make sure you get the size that fits your face... I wear a large Bauer cage on my small V08, the cage and helmet don't have to be the same size. I went with the Profile because it was the closest shape to the old Jofa I had in the 90s (CCM makes something similar but their sizing is odd, medium is way too small and large way too big).
As for the Reakt, I've been trying one for the past month and a half on one of my helmets and I'm still on the fence... I like the weight (which I really didn't think would be noticeable), and the color since it is less distracting, but it's a slightly different/smaller shape than the Profile (I prefer the Profile shape over the Reakt) and the bars spacing is ever so slightly different than the Reakt so it took me a while to get used to t. All in all I think both are great choices and both fit well on V08 helmets.