Surprised more people didn't say this, but SPC Plum Pudding and its sister blend Potlatch are REALLY good balkans. I just smoke the base Plum Pudding because the high falutin' stuff is SO expensive. I was blessed to be at the SPC meeting where they rolled out Potlatch, Deception Pass, and the extinct (branding issues) Pike Place. Very good blends.
Mac Baren Vintage Syrian is awesome.
Russ Ouellette's White Knight, Black House, and 10 to Midnight are great.
Abingdon and Charing Cross are two great Balkans from GL Pease.
For English blends, I like Star of the East, Pirate Kake, and Engine 99 from C&D. I also like Quiet Nights, Gaslight, and Westminster from Pease. I also have always enjoyed Dunhill EMP and Nightcap. I've not had the Peterson versions.