I drove a GTI with ST's last weekend for a good distance of high way and street. I'd say comfort wise they are very very close, with the SHS's maybe being a tad softer than the ST's, but sounds like the ST's may go lower.
But the SHS, ST's, V1, V2, V3's.....they "should" be all the same height wise....it's pretty much all the same design across the board in the front struts & rear perch setup....just the ST's aren't stainless as opposed to the rest.
And then there is no difference in the V1 & ST dampening. SHS supposedly has different dampening and/or softer springs though.
And then the V2's have rebound adjustment.
And then the V3's have full adjustment.
So they should all be identical in the end though
But I hope that these are truly softer than the ST's. ST's weren't bad, but were kinda stiff (on my CC). In comparison, the Koni's were softer for sure.