Sanjay,
I compared, picked and purchased the SLC 10x42's over the EL 10x42 SV's, Zeiss HT 10x42 HD's and the Leica Ultravid 10x42 HD+'s...the SLC optical prowess and solid ergonomics are that good! However, then I Dared to look through the EL 10x50 SV's and now have the SLC's for sale!!! The 10x50 SV Deep DOF, FOV clarity, superb resolution, razor sharpness, stark contrast and accurate colors are the Best I've ever looked through, creating a WOW effect that takes my breath away each glassing session!!!
You've stated on BF before and above that you Really Did Like the Optics of the 12x50 SV the best, that they were, "very impressive", but questioned if you could handle the extra weight issue of the Swaro EL 50mm ergonomics. The EL 10x50 SV Will Be identical in form and handling as the 12x50, so you have Already Experienced and Know what the 10x50 will be like in overall glassing. However, the 10x50 does offer a Wider FOV, a Brighter Image that will assist in very low light situations and be easier to control Bino Shakes due their lower power. Actually, out of the 10 or so 10x binos I've owned or handled these past 8 months, the heaviest (EL 10x50 SV's) are the easiest to handhold in a stabilized view due to their balance and heft!
As others have asked, what will your primary usage be??? Hours long birding\wildlife close up glassing sessions (daytime) where you'll have very little rest breaks to put them down (use 8 to 10x power, 32 to 42mm glass)? Or, will shorter sessions of longer distance glassing, like hunting or general scenery\wildlife viewing in shadowy\challenging light with more frequent periods of rest be the norm?
It appears your persistent purchase hesitation and line of BF questions are simply related to a perceived weight problem. Certainly, that is a possible issue that can be addressed and controlled. With a good, well adjusted Bino Harness, the 10x50 SV extra weight should not be an issue in any of the above activities. The EL 10x50 SV plus the bino harness will become more of an OVERALL Glassing Instrument combo that can fit comfortably into most, if not all, binocular sport activities, giving what I believe is One of the Best Viewing Experiences today! :t:
My .02 cents,
Ted