Shane,
I mounted the SV on my V-22S the day I received it, but weather kept me from doing any shooting with the new scope for over a week. When I finally was able to get out to zero the scope and do some group shooting with it, I was impressed. As expected, the SV was considerably brighter than the SIII 45x45, and the geared parallax adjustment made it extremely fast & easy to get the image focused. It also has a tad more eye relief than the 45x45, which made it possible to mount it far enough to the rear for comfortable shooting without the need to crane my neck forward as I'd had to do with the 45x45. I haven't 'shot a box' to test tracking, but in the process of getting it zeroed, it responded to the adjustments I made as expected. So, to sum it up, after putting a little over 100rds through the rifle with the SV, I'm having no regrets. Yes, it's quite a bit heavier than the 45x45, but at this point, that seems like a good trade-off, with the excellent glass, geared parallax adjustment, and easier to turn elevation turret with very distinct clicks.
If they made the SV ED series in a ffp 6-24x56 with mil reticle & knobs, an internal zero-stop, 10 mils/revolution, illuminated reticle, and included the geared parallax system, I'd seriously consider buying one to compare it to the Kahles K624i scopes I have on my PRS rifles. Instead, I see that they're offering an upgraded SIII line called the PLR...since I already have a number of Athlon Cronus 4.5-29x56 scopes on the comp rifles (CF & 22RF) that don't wear a Kahles, and am well satisfied with the Athlons, I probably won't be trying a SIII PLR.