First off, i they are built well, they will probably work fine for a long time for you whichever you choose.

But what are you using them for? If you are just training on them and planning on going long distances from your house/car, sometimes in foul weather, I would go 28/32 or more, but if these are race wheels (if you are into that kind of thing) I would go more like 20/24 (laced 2x).