I meant in relation to the others
I think they are all pretty much same weight around 620-650g.
Couldn't comment on the SG pads but SS make VKS pads, and the SS pads in your link above look very similar to the original VKS superlight (642g according to Vinay's post in the link below). I'd be surprised if their weight is significantly different.
Meanwhile going by VKS' description, the Superlight II are again about the same weight as the original ones at 621g on this video.
https://youtu.be/_MrMaFRI6EkIn the VKS section there is a review of the original superlights and VKS gives the weights of his then models.
These are all going to be light.
I don't think you'll feel 30g or so difference per pad. Fit would be just as important I think but the first 3 are going to be very similar in that regard also.
http://custombats.co.uk/cbforum/index.php?topic=30194.0