The trouble with using wingspan as a measure of size is that it doesn't take aspect ratio into account.
We used to call them 3/4 or full size based on the leading edge length which worked irrespective of A/R:
Full size = 165cm, i.e. two full arrow shaft sized sticks
3/4 = roughly 125 (kites like psychos back then)
and since a lot of pultrude used to come in 3m lengths we got the kites like the BoT with 150cm LEs (no waste from a 3m stick)
Gradually these old conventions got superceded by calling a kite a .75, .85 or .90
The .75 / 3/4s are generally small and berserk. I still love the Psycho but I'm weird
The .85s / 140s like the Fury and Midi are sweet
I guess a DS is about a .90 / 150 ? A Nirvana is about this size too from memory. A good all round size
A Mamba is full sized, a proper kite
So many kites, so little time...