I have the 2002 Oxtar Evo Ti Boot, with TCS and MCS technology. Basically, it's the same (I think it's a little better) as the SIDI vertebra system. Same concept anyway. They fit really well, but are a little hard on the sole...but I think all boots are like that. I think I just need to break them in some more. They have titanium toe sliders, which is pretty cool I guess. They don't squeek when you walk, and they look pretty damn sweet in my opinion.
I got the black/silver colors, BTW
Q