Best is in the tastes of the beholder. I enjoy C&D English blends with burley in bulk, like Old Joe Krantz, Billy Budd with cigar leaf, Bayou Night, Tuggle Hall, Stratfordshire, and Mountain Camp. Since I'm a burley devotee, I appreciate the inclusion of burley whether as a base or condiment.
Nat Sherman made an excellent English with burley as a condiment, blend 536, which was sold both by the tin and in bulk at their Manhattan store, now long-closed. That's about the most refined version of an English, with or without burley, that I have smoked, though that is highly subjective.