the one time might be better for you if u want less then 105 waist, the 173 size is like 98 i think? and the 183 is 109, compared to the one lifes (which i have a thread about > https://www.newschoolers.com/ns/forums/readthread/thread_id/770883/ ) that are 112 under foot and have more rocker, also dont listen to the guy that said they are bad, he obviusly hasn't riden them, and as u can tell from the owner reviews on my thread, they ski amazing and are very loved skis! good luck finding something!
P.S. surface has fixed their quality isues, they are no worse then volkl or rossi