Allegheny is my favorite. It has a superior texture and flavor. Texture like custard meets papaya meets avacado. Taste sweeter than most, reminiscent of cantaloupe and bananas. The sometimes funky pawpaw aftertaste is muted in Allegheny. Beautiful orange-yellow color inside. Fruits on the small side, which I prefer. Fruits shaped more like an egg than a potatoe.
Shenandoah is different but another good one. Pale yellow custardy flesh with a mild banana pudding-like flavor. Classic potatoe-like shape. Medium size.
Potomac and PA Golden are okay too.