I order my bulk "house hops" from Puterbaugh Farms (hopsdirect.com). Their prices are excellent. Last time around, I ordered a pound each of Cascade, NB and EKG. This time around, the selection was different (no EKG), so I got a pound of Galena for a good bittering hop (high AA means more bang fer your buck), a pound of Cascade for my more aggressive ales, and a pound of Willamette for a more subtle character. Puterbaugh notoriously sends you more than you order---like, 1.5 lbs or so. We'll see if they're as cavalier with their weighing practices now that the hop harvest looks poor, though. Anyway, I really recommend versatile varieties like Cascade and EKG, and a good bittering hop that you can use almost universally.