Remember any kite apart from a single skin holds some air and carries it with the kite increasing weight on top of the additional skin. The single skin kite moves through the air without carrying it which can cause drag but the responsiveness due to the overall light weight can't be beaten.
I went to our local beach yesterday and I could only register a maximum of 7 knots anywhere on the beach or dunes. Other kiters turned up and waited for more wind but gave up. I decided to get out my large kite, 5m Peak4, which I had not used this season. One swoop through the window and I was up on my foil and was powered up enough for a good session on my own
If you have a surf foil and haven't tried a single skin Peak4/5 kite and you are wondering why they are so often mentioned, get one or borrow one to try. All the talk on a forum is nothing compared to the real world experience on these kites. They feel so sweet to fly that anything else, (that I've tried), feels heavy, sluggish and unresponsive.