Well, I can answer my own question as curiosity got the best of me and that LL Bean sale was too tempting. The HG 10x42's just arrived and I compared them at dusk with my Monarch 7 8x42. The 10x HG's have what appears to be the same amount of light getting through as the 8x Monarchs, which is impressive. It took a few minutes but I can also notice better resolution as I was trying to read license plates with poor light and that was being held single-handed. I am sure I'll be very happy with them on a tripod. Money well spent and I am still very impressed with the Monarch 7's that were less than $400.
Good deal. I almost picked up a second pair with that super LL Bean deal as well.
The only downside I've found to these bino's is my diopter ring doesn't really lock down firmly into place, but it seems that is being reported by some users. I found it was getting moved going into and out of my harness so I used the age-old thin strip of electrical tape to keep it seated. I feel you really shouldn't need a "fix" on a thousand dollar set of glass and I may end up sending in to Nikon after the season, but other than that quirk, they are my favorite glass by far. And I've owned a few.