Lord Muck ..... You may also want to consider the new Leica Ultravid Plus 10X50. Just as some members who preferred the Swaro 10X50 EL SV compared to the Swaro 10X42 EL SV, here is a review from a member that compared the new Leica to the 10X42 Swaro and likewise, indicated that he preferred the 10X50 Leica.
http://www.birdforum.net/showthread.php?t=310510
These two are top of the line for these two companies and are similar in their specs. Each are about the same weight and have about the same FOV. It would be an interesting comparison.
You indicated in another post that you are looking for substantial difference/improvement over your current Conquest. In that case, you might want to also include the Zeiss SF 10X42 in your review. The 360 ft FOV / 120 meter FOV may be a more noticeable change for you compared to the more subtle optical differences.
Keep in mind you are already at a high level with the Conquest. Some have described it as near alpha. I find the improvements of the three models mentioned more incremental rather than a night and day type change. However, unlike a more expensive bottle of wine that can be enjoyed for just one meal, the optical improvement is there for as long as you use it. I look at the improvement as being accumulative and I get the value over time. Considering the cost of all the trips and outings, the additional cost for the incremental improvement in the view (which I appreciate and enjoy) is very small. Also keep in mind that alpha binoculars hold their value well, so if you buy right, you can get back a good amount of your original expenditure.
I own an SF 10X42 (along with a Swaro 12X50 EL SV). I have only looked at the Swaro 10X50 EL SV in the store a couple of times, directly comparing it to the SF. Both are excellent but have different qualities. I have not used the Leica 10X50 so I only know what I read and have seen in other Leica HD Plus models.
The advantage of the Swaro over the SF is that larger exit pupil and objective lens that some prefer. The advantage of the SF is the wider FOV and the lighter weight and balance. Excluding the FOV, I did not find that much of a difference in brightness, contrast, color balance, etc, where I would choose one over the other based on just that criteria. There were small differences but I thought overall equivalent. However that was inside a store, so my opinion might be different out in the field. Both are a double hinge design and use lens flatteners. Ultimately, the wider FOV, more rearward balance and lighter weight of the SF is the better choice for my personal preferences. Obviously, not everyone feels the same way!
The major differences between the Swaro and Leica are double hinge vs a single hinge and a flat field of the Swaro vs a classic system for the Leica. I suspect there would also be more of difference in the final view due to differences in color balance. It would be great to get some some opinions from members who have compared the new Leica Plus to the Swaro. Ultimately, these are personal preference differences.
I doubt if any of these can be labeled "best". All are excellent. It comes down to with attributes are the best match for the buyers personal preferences. Hopefully one will stand out for you. Please continue to keep us updated as your search progresses.
Also keep in mind that Lords should not want to seen wandering among the masses with less an alpha hanging form their neck.