
You seem pretty set on the Whyte Dave. It does seem like a great package but from what I've heard it's almost too efficient for it's own good. I know that sounds strange but how detatched do you want to be from the riding experience? If you want to go as fast as possible with as little trail feedback and interference as possible then it would be ideal, but if you ask me, where's the fun in that!?
My only advice would be to get a good long test ride on proper trails first. Then try something else and test ride the Whyte again. £2700 is a shit load of dosh to get it wrong.
IMO the best ride for a longish travel all day full susser is the Turner 5spot. For £2700 you could get a decent build up. Having ridden one at Glentress I couldn't recommend it highly enough, it made me look like a good climber and descended like a dream, but was still involving and fun. Try one - you won't regret it.