The Zeiss SFL is IMO without a doubt a better binocular than the HG and well worth the difference in price. Here is my Hillbilly Review comparing them to the HG.
Since I am kinda of a hillbilly, this is my hillbilly review of the Zeiss SFL 8x40 compared to the Nikon MHG 8x42.
Well if you had a good hog season, I'll tell you right now, just go out and buy the Zeiss and then don't you have to read the rest of this baloney review. It is better. No hogwash about it. Just remember it will cost you almost $900 big ones more, though, so don't tell your better half. The Zeiss has nicer, more comfortable armor so when your hog hunting they ain't going to fall out of your hands and then the pig runs you over, and the focuser is better placed being more forward on the binocular.
The focuser on the Zeiss is smoother and more fluid than the MHG, as is normal for most of them Zeiss. So I guess we could say what is that big word, oh yeah ergonomics is better on the Zeiss. The big circle or what's that called FOV looks about the same, although the specs on the MHG say it's larger. The edges are sharp as a good hunting knife on both and are about the same. The colors are more accurate and purer on the SFL. I could make out the difference in a boar and sow hog easily with the SFL.
The contraster seemed a little better on the Zeiss, and the view seemed a little clearer and more real to me. The big difference I noticed was when I got near the sun, I didn't get as many reflections in the view with the Zeiss as I did with the MHG. The Zeiss SFL is much better around the sun than those big fancy alpha type SF and NL's for sure. Especially that glare monster, NL. CA is about the same on both and was very good.
Those rubber thingies you stick your eyes in are better on the Zeiss than the MHG also. They are rounded and more comfortable than the MHG and I don't know why the MHG cups have to be so gol darn long. The Zeiss SFL cups are also much better than the Zeiss Conquest HD cups because you don't need vise grips to get them out and are more like the gooden ones on the SF. I don't get none of them blackout things either with the Zeiss SFL.
The Zeiss is a better binocular, but for $900 more smackers it darn well outa be. Well, anyways, let's get this thing done here. I told you I liked the Zeiss better, didn't I? Well I do. Darn straight. This Zeiss will be real nice when we're making shine down in the woods, watching out for the law. The Nikon HG 8x42 are on eBay if anybody wants them. For $700 I don't think you will find yourself a better binocular. If you buy em, I will throw in a bottle of my best shine.