I'm considering getting a Satori gi, and must choose between 12 oz (appropriate for intermediate students, teenagers, and individuals of lighter stature) and 15 oz (their "trademark", original version). They are both at or above heavyweight, so I don't know how much they will differ with 3 oz inbetween them. Some considerations are temperature, wrinkling after washing/drying, and how heavy the gi feels. If you own a Satori gi, opinions about it would really help.