I'm not a big fan of Rock Shox products' I had a lot of problems with the ones I had. Albeit, that was some years ago and their new products appear nice. I would vote for the Black Elite. I'm impressed with the Reverse Arch Technology and the travel adjust.
Granted, I stick with Marzocchi when I build up a bike, but you didn't list them, so I'll shut up now!
L8R
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"Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and loudly proclaiming, "WOW, What a Ride!" - unknown
"Your Bike Sucks" - Sky Yaeger