Hi,
this is my first post, i've got some questions i've been running through my head for a while

and so this'll probably be a long one, please bear with me

From looking at
http://www.commencal.com/news/bicycles/geometry/meta_666.pdf the medium has a 22.5"TT and the large has a 23.3" TT with these measurments taken from the steerer tube to the seat tube as opposed to to the theoretical seat tube position which looks like it would be 50 or 60mm further back at front mech sort of height(if someone knows the correct horizontal measurement that'd be great) with the slack 69* SA reducing the 50 or 60mm to 20 or 30mm when compared to a bike with a 72* SA (1* is roughly equal to 10mm horizontally, 3* = 30mm). So what I am trying to figure out is what size frame would be the right size for me (I'm 6 foot and am just under a 32" inside leg, shorter legs longer body) and would be comparable to my current Large Santa Cruz Heckler (69*HA 72*SA 23.5TT). The SA diff on the 666 between the actual seat tube and theoretical seat tube would effectively give the medium 666 a 23.3" or 23.7" TT and the large 24.1" or 24.5" TT. If these measurements are right then the Medium would be the right size (the large seems too tall as i like low slung bikes due to leg length and chuckability)

.
Any of you good folks able to help/confirm any of these ramblings?
Obvioulsy i'd need a good layback post to get my saddle back where I'd need it (used to have a bullit that was lovely with its 23.8" TT and a 60mm stem), I wanna run a 60 or 70mm stem, and am gonna fit a Gamut P30 (I only ever use my 36T ring).
My other question is anyone have an idea how the ride of the 666 compares to an 06 Santa Cruz Heckler (143mm rear travel) with an 08 Pike up front (I've previously had a 4.25" travel 98 heckler and a 6" travel 02 bullit)? I also run two diff wheelsets, old mavic 317s with 2.1 tyres on hope bulbs and old mavic 521s with 2.3 tyres on hope bulbs so the bike can be used for more types of riding.
The back ground to all of this is that I'm looking at selling my 06 Santa Cruz Heckler and replacing it with an 08 Meta 666. I had looked at Meta 55s when i was buying the heckler earlier in the year but just couldnt see any at decent prices on ebay so I went for what I was initially after, the heckler and fitted some 08 Pikes (ummed and ahhed between these and some Fox 36s but figured the 140mm of travel was enough). So the 666 has come into the frame after the battering my hands took in Les Gets this summer that left them sore when clenching them for two weeks after getting home (i could've ridden more slowly when there, but that'd've missed the point

) made me realise i should've got the 160mm fork and I want to have teh suspension balanced at both ends (have read a couple of statements on here stating that a 140mm fork is right for 55 but a 160mm would be too much and that a 666 would be better for that much front travel). I had been thinking about a second hand Intense 6.6 but someone at work tole me about the 666 he just got from Merlin (cracking deal) and so the 666 is my prime choice.
Ta in advance!