Replying to Skis for my dad...

okay im going to be honest. Hes not a great skier. He doesnt snowplow and he can make it down blacks, but still not a strong skiier by any means. Right now he has strait skis which are probably about 190cm, and i think he really struggles with their size. He is 5'11" 180lbs (i think but i dunno). Hes neveer been on shaped skis at all so what would be a good ski for him? and im not talking PEs or anything, i mean like an all mountain or carve ski. Also not too expensive