I'm a birder, and in the military. It's funny, because I get to travel to exotic places (like in the last 3 years...Iraq, Horn of Africa, and now back in the middle east again..ok maybe not exotic but you get the drift) and look for birds on my free time.
It's addicting...like hunting without the kill. Add a scope and a digital camera and it's just like waiting for that perfect shot.
For birding, I need to be able to see the iris/eyepatch, and rump patch sometimes to be able to id the bird. Usually, the bird is in some cover/shade and fidgeting around so as not to give you lots of time to observe. Presently, where I am now (can't say specifics) the birds all fly directly to the shade and land. It's a neat behaviour. But, it makes it challenging to id them without some nice glass.
So, after reading your post, I'd suggest that you compare the same magnification/size between manufacturers. A 10x is hard to find a little bird in the bush unless you've been doing it for a bit.
So compare 7/8x compact, mids, or full sizes as a group. Then do the same with 10x. Pick and arbitrary number scale (say 1-5) and rate the binocular as you see it. Give the first one you pick up a 3 regardless of manufacturer. Then grade the successive ones either higher or lower than that first one until you detemine your 'winner'.
If there are any birders in your area, they will almost always let you look into their binocular/scope and tell you why they purchased that optic and which optic they replaced it for.
Also to me, binoculars for hiking (compact), birding (compact/mid/full), and mountain long distance viewing and astronomy(tripod mounted) are all different.
Regardless of which binocular you choose...the number one thing is to have it on you to be able to use. Not sitting at home or in the bottom of your pack.
Oh well my 2 cents.