I liked the UFC Narrow more than the UFC, but both are great boards. Most probably because the sweet spot form me in width is around 17-18cm. Both feel like they have a longer effective edge than they seem to have. Both feel very "sticky" when coming out of the turns. I also have to admit that I prefer the traditional Virus nose over the new square one, not because of the looks, but because of the feel. I feel the traditional nose leaves more room to make changes to the turn and also the release feels softer. Can't define it more precisely, but if you tried both, you'll know what I mean.
@Ladia: sure, the progressive / changing sidecut of the Virus boards gives you a great feeling, you can easily shorten the turns if you want. Question: the Scalpel does not have a too big camber and pop, right? That's what I can recall from testing, but I tested it 2-3 yrs back in Zinal, so I'm not sure. Also, I remember that it had a terrific edge hold, I felt it didn't even want to release me when coming out of the turn.
@Like Carving: Virus has many great boards and all of them are different worlds. Even the ones that look alike, e.g. a Gladiator and a Berserker are completely different. Now the X-treme and the Scalpel are very differently behaving boards and both are pretty far from the traditional narrow poppy Virus feeling. Given the price, it is really worth testing before buying to make sure that you buy something that you really wanted. Or you may want to buy both :)
Later,