my edges starting coming out after a season but to be fair, i always kept a left and right ski, so my inside edge on my downhill ski got worn more than it should've in the time period that i had them for, Plus I hit about 5 jumps last year and pretty much only did rails. I also stupidly took em for urban and the stairs had cheese grater metal over the steps.
I personally like a longer ski, I am 56-57 and ride the 176's. But It's up to you to decide what size you need.