I'm considering picking up either one of the Ghost 90 or the Vostok 90. I have read the previous discussions on these two razors - mostly good stuff. I'd like to get opinions on how these two razors compare against each other - in terms of efficiency, aggressiveness, clamping, chatter (ymmv, of course). FYI, I use the GC-84 as my daily driver and am fairly happy with it.