It'd probably be helpful to hear from GHS' @Jon Moody about this... He has helped with this discussion in other similar threads.
My current SilverSlap E and A are ca. mid 2018, pre-GHS, so I can't really address the tension and feel since the acquisition. I also have 2 sets of new period-similar SilverSlap E and A replacements for those strings whenever the time comes, and the originals are showing no wear, so I won't be in the market for the newer GHS/Innovation SilverSlaps for quite some time. But I like my SilverSlaps, so I'm curious about this discussion for whenever in the future I need to replace them with new GHS/Innovation SilverSlaps (or whatever GHS/Innovation Slap string I would need for the same tension and feel).
In advance of Jon joining us here in this discussion, my recollection of what he has mentioned in other TB/DB threads in the past is that GHS has meticulously worked to duplicate the string recipes that were provided to them by UK-Innovation, but a lot of those recipe details were less than exact. What is intentionally different now is that some of the manual UK-Innovation production processes have been replaced by automated processes, so theoretically now there should be more consistency of the strings produced within one string type.
That said, I suspect that the tension and feel differences that people are experiencing based on pre-GHS comparisons are because of unintentional variations that occurred within the UK-Innovation shop due to manual processes and material changes. For me, that may mean that when purchase time comes, instead of SilverSlaps I may need to get SuperSilvers or another higher tension synth/slap GHS/Innovation version. Given my current E and A longevity that may be decades in the future, but I hope I can find those strings when I need them.
Other string makers do come to mind if necessary. Among those, Eurosonic strings have a similar feel and a good variety of tension selections; to me they sound a little more metallic then I prefer, but they might work out for E and A strings in a similar mix to what I'm currently using (with SBW Dirty Gut D&G). And then also, the new Aqula string selections -- both gut and synthetic Golden Spirals and Red Springs -- really also have my eye.