Mine would probably be Rattray. Red Rapparee is my favorite blend of all, Old Gowrie is my second favorite Virginia made (behind FVF), and I like the rest of their line especially Highland Targe, Accountants and Marlin Flake.
The other two that were serious contention were McClellands and Samuel Gawith. I love the McClelland Virginias, especially No. 24, but find weakness in most of their Latakia blends (Samovar and Scottish woods definitely excluded). Samuel Gawith's Full Virginia Flake is my favorite flake of all time and I love Navy, and while I like Squadron Leader, it's not at the right amperage for me, nor are their other Latakia entrants.