The Spitfire gets my vote of course.
Honestly, about 7 of my riding group (luckily we all don't head out at the same time, we'd look like right plonkers), all got the spitfire after trying it out. It really is that capable, fun, rewarding silly-grin type bike.
Underdog, punches far over it's weight, not all too pretty looking... perfect for me
I'm battling at the moment with a decision to let mine go or not. I have mentioned in this thread before, that I'm moving to Australia and will be selling up the DH bike. The area I'm going to has some decent uplifts though, so would still want something that I can use as "Mini DH" (wtfever that really means) but will also pedal all day long.
I'm toying with the idea to buy a Santa Cruz Nomad, just because it is very light and 165 travel, so might* be able to get away with more than the spitfire does... though I'm not too sure about it.
Why not try mine out - you;re not too far form me are you?
edit: Missed the other question - you would be doing an injustice to the bike, if you put the Sectors on it, but ultimately, the geometry will allow for it to work fine.