So what did you say and what did he say?

As far as a few common strains go, at least in my experience, they are in this order

Grapefruit
Blueberry
White Widow
Sour Deisel
Manatuska Thunderfuck
Purple Erkal (aka Grandaddy Purple)

Like graph pointed out though, a lot has to do with how it's grown and the skill of the grower.