Agree with others, Stonehaven and Penzance are good, but not worth the hunt when there are so many other greats out there ( see a list below of some nice Virginia flake mixes you may enjoy ). VA flake is something that takes time; knowing correct pipe, dry times, taking time with the smoke are all key to having that GREAT experience - you may not get that pure smoking bliss every smoke but man when you do, just sit back and enjoy the ride. The strength of some of the flake listed below can creep up on you so until you know what your dealing with, start with smaller pipes, cone-shaped bowls work best IMHO and doing the fold/stuff with the flake will give you a great slow/cool burning smoke.
Peterson: University Flake
Dunhill: Flake
Astley's: No. 44 Dark Virginia Flak
Solani: Virginia Flake - 633
Fribourg & Treyer: Vintage Flake
Solani: Silver Label - 660
Wessex: Brigade Campaign Dark Flake
McClelland flake are outstanding, but take even more time to work out the balance - dry times, smoking speed, etc. I started with these blends when just starting out, OUCH - they tore my mouth up because I smoked them WAY too fast.