I had the same decision to make several years ago. I chose the Scorpion 7.5 over revenger 25, since sold that and bout an 8.1 Scorpion with a difference. Both are very good boats, and I have done several hours in Revenger hulls (hard and soft). The Revenger is quicker generally, and turning is like they are on rails. If you want ulitmate speed, the revenger is a very good choice. Scorpions have a very cute little chine and slightly rounded bum, at speeds above 70mph my new one is a real handful, and speeking to a guy who owns 3 Scorpions recently, they commented that even their 10m twin surface drive got quite scary over 70knots, so they propped it down.
I have seen some pictures of a revenger that used to go out to play with biboa club and struggled when it got rough, where the Scorpions soldiered on, but I have never been out in a revenger in severe weather. I raced in lymington challenge a few years ago, and a 27 Revenger was infront of me although he had an extra 15mph top speed, but more impressive was a little 715 who only finished a few mph behind me. In 5m swell at times.
Scorpion is a very good ride, and recently my racer(and ex revenger 25 owner) commented my boat had the softest ride he had ever experienced. Hes also been around britain in a Pascoe (and a zapcat
) I think they are very soft as long as you keep them flying level, they have LARGE outer chines aft and land hard on the back end. But then dont all boats. I personally think Scorpion has lost a little bit of its specialness since Graham sold up. It was partly him I bought into as his after sales was considerably better. Now the new kids have gone quite form and design over function, and the small things you want to buy, now cost a fortune, where as Graham would have sold it at cost, because you were "in the club" IMHO.
IF I was buying now, in the 6.5m range id choose a revenger, 7.5-8.5 it would be a scorpion, but If I wanted a 29 revenger it would have to be step hull, as better flat running in head seas. 10m would have to be a sting. Both boats are very good, and Phil at revenger entertained me for years, taking me out on demos while I very slowly made my decision. Neither will dissapoint.