Well.....IMHO......I would say the best value would of course be the graded Proofs or Silver Proofs, and then second the MS.....but if you can land some good deals on doing this.....both would be worth having in your collection.
I would just say to stay away from the "hoopla" of some of the "t.v. coin people" selling "graded St. Qtrs."
Home Shopping Network coin productions are NOT good deals on graded coins period....but espicially the State Qtr. Proof and Uncirc's........if this is your "source" for purchasing....then don't do it. Pursue that interest from other more reliable sources.