wut i mean by easier on rails for shorter skis is that u don't really need a the pop or stability u get from a long ski on a rail/short ski. when ur on a rail, all u want it less ski to fuck around with u maneuvers, u dont really need a ton of pop, plus less ski means less to balance on the rail. the above kid has a point, if u want to stomp rails and boxes, get a long ski, but a short ski will allow u to swup and 450 roun it a lil easier.
really its all ur preference
most expert skier ride longer skis, so if ur lookin to push ur game, get a longer ski
my opinion: im 5' 8" n 165 lbs, i like my skis tween 175-180cm