I usually recommend Dunhill Flake, but the DF is very popular and fits the "mainstream" moniker.
Dunhill's just brought back a blast from the past -- The Elizabethan Mixture. It's a Va/Per (Virginias and Perique), definitely worth a try.
Also a Va/Per and a favorite of mine is Hearth & Home Anniversary Flake from Pipes & Cigars.
For a "straight" virginia, there's Capstan, finally available in the USA and now made by Mac Baren. The Capstan Gold is milder, the Capstan Blue is Medium, both come in flakes (which I prefer) as well as rubbed out mixtures.
I'd be interested in what you get and what you think.