Need Tonearm help for a Thorens TD124 Mark II

I've had a NOS Thorens TD124 Mark II for awhile now and it's still in the box but lately have considered taking it out and putting it into service. I have a couple of other turntables so is it even worth putting into service. If I do, I need some help in choosing a tonearm. I do have a NOS SME 2009 Series II Improved tonearm that has never been mounted. Should I go with something like that or a modern tonearm. I don't have a cartridge picked out yet but I do have a sealed Denon 103D and a NOS Shure V15 Type VxMR. I am inexperienced in setting this up but want some advice as to what other owners or people who heard a TD124 think, or what direction they would go in with what I'm working with. Thanks all for Your help!!!