I think this is the variety I grew this year as an experiment. I had 2 square and 6 plants (started inside from seed) so about 3 staggered to a square. It didn't seem overly crowded and grew like a champ. My only complaint is that the individual pieces are rather thin (but strong in taste and smell).

I won't be growing it again, but that's just so I can make room for other varieties.

Perhaps I should try Tango instead. It's the other one I was considering. Has anyone tried growing Tango yet?