The way I see it, blenders can't know what's good for me.
I've shamelessly experimented with what I put in my pipe and I've come up with the following blend:
1 part Latakia (preferably Syrian; I use Robert McConnell's Pure Latakia)
1 part Havana (I use Robert McConnell's Pure Cuban, or whatever it's called now, I don't keep the tin so I can't check; sliced low-to-mid-end cigars also get the job done)
2 parts Virginia (I actually use Robert McConnell's Maduro, but others have tried various Virginia blends and got different mixtures, each to their own liking)
After you mix the tobaccos together well enough, stuff them inside a jar as hard as you can with your fist. I use 7 ounces of tobacco in a 25-ounce jar. Let them blend for at least two weeks (the more the better) and then tell me what you think.
Disclaimer: Here we tend to smoke tobacco a little drier then I've found the few American blends I've come into contact with to be. This blend is similar in composition to Peterson & Sorensen Banker's, only a lot more robust. Have a cool smoke!