It's time to replace my Rab Latok shell. I've had it a while and things seem to have moved on since i last purchased. Currently looking at Mountain Equipment Goretex Pro shell jackets. In particular the Kalanka as i'll be using it for climbing/mountaineering rather than walking about in the rain! I've read the sterile on line reviews, but does anyone have any first hand experience they could share on this jacket or maybe the Kongur/Changabang jackets?