Anybody out there who owns a Slayer who's done some miles on an Altitude? If so, how do they compare?

'13 Slayers are drying up quickly on this side of the pond (no 19" frames coming anymore..) and I have a very small window in which I can order an Altitude 770 or 790.

Some of the racing I'll be doing next year really demands a bit more travel and slacker angles than my Element MSL has. My primary concern with the Slayer is the short TT + steep ST combination, which would make it feel a bit cramped going up. On the other hand, is the Altitude going to be as capable as I need for enduro racing (in the euro sense of the word)?