I don't currently have these on my spec but have a few questions.
On the pictures it looks like the seat bases are just the same as standard, is that true or are they padded differently?
Are the side bolsters deeper/bigger?
Why are they better generally? I've seen all the "comfy" comments but please define this - I have a bad back and really do appreciate a good seat when I sit in one. I've elec lumber support on my spec already so the cost to upgrade to SSS is reduced slightly.