With all my recent coin purchases, I had racked up quite a few E-Bay Bucks. Thus, I was able to upgrade two coins in my 7070 type set based solely on E-Bay Bucks. With the remaining balance I bought a Conder Token for my seated-imagery custom set at a 32% discount.
When it comes to coinage designs the two most important features I look for are brilliant artistry and strong allegories. Occasionally these two characteristics appear on modern US coins. However, many of those are expensive to collect because they are struck in gold, platinum, and palladium.