I've heard Jack Herer, Indica (as in strong - couchlock) and yeilds are quite good. Smells a good bit (incase that's an issue) but it was pretty much made for growing big yeilds of satisfying bud. This is what I was told by a Budtender in Amsterdam - good enough explanation for me. But I checked SEnsi's website and the yeilds don't sound rediculous.. Hmm..
In general skunks tend to yeild quite high, was another one made for big yeilds. Also, Cheese is supposed to be the new skunk from what I hear!
Just thought I'd add something since there are no replies!