I agree whole heatedly JFettig, they are not a rougher but cut great and as you say leave a superior finish, I like their low prices too .
They are now my goto end mill. Remains to be seen on their longevity as they are of powdered metal construction, that said so far so good.
These are what I purchased.
3/8" YG1 Alu-Power 3 Flute Extra Long Length Carbide End Mill for Aluminum | eBay
They are as polished as the picture shows and really sharp.