I'd look at the mintages of you are looking for scarcity but I would expect the survival rate to be above 90% 30 years from now so don't think you have any rarities. I'd go for the coins that look best to you. The ones you'd like to pull out on a quiet evening and look at. Maybe a mixture would be good. Either way , none of these will qualify as major "investment pieces" anytime soon.
Proofs are easier to find and are cheaper to acquire. If you start with MS then you'll have to work a little harder and fork over more money per item. I've almost finished my modern gold commen proof set and will be moving on to the circulation strikes sometime next year.
Comments
Coyn
BOB
Commemorative_Set
Sacagawea Set
The Pan Pacific $50 would be the best place to start.