Yea, people don't really understand the difference between regular and middies, and sinsemilla and hydro.

Regular is the horribly stemmy, seed-filled, dry, trimmed buds you buy for REALLY cheap, they're normally imported from Mexico, going through many dealers hence the dryness and the buds all being trimmed down.

Middies are grown similarly to Regular, but are grown locally, which is why they are fresher and not trimmed. Also, since people don't know what's what, dealers will sometimes accidentally sell sinsemilla as Mids, which is very good for us consumers

Sinsemilla is where, when growing, the male plants are removed from the female plants so the females spend all their energy on THC production, and don't end up pollinated where they spend the energy making seeds. This is also called "KB", I've heard it called "Chronic" and is, as has been said, called "Dro" a lot too.

Hydro is just growing it hydroponically. While I'm no expert on the subject, as has been said here, I think it just increases the amount of cannabis you can grow in a given space. I do believe Hydro and Sinsemilla are about the same quality, just I think sinsemilla costs more as growers can't grow as much.

Oh, and obviously, this is just from my experience in the American Midwest, I have no idea what it's like for anyone on the east or west coast let alone another country.