I have had my retro's for 15-16 months now and have birded plenty of times and am sold on this binocular. I spent yesterday birding a Riparian area in SE Arizona...it wasn't overly hot, ...more mild with a bit of wind. But I used my 7x35. and my wife used her Meostar 8x32. Both enjoyable but to speak to my view, wow...... I know Leica has great contrast and colors but down here in the Arizona habitat, the browns, reds....just pop...just pop. And the willow trees and Cottonwoods with their leaves just beginning to burst out really made for excellent viewing against that green backdrop. I haven't counted the species seen yet, but I know that there wasn't one bird I missed because I had a 7x. Nice bright colors, true....no glare, easy focus etc...so from that standpoint,...just an outstanding day.
Now, from reading the forum I have found three things that people have brought up as possible issues. I will speak to those.
First...the focus wheel and being unpadded and small. Sometime ago I added a 'o-ring' to the focus wheel as recommended by someone on this forum. I can't say it made a huge difference, if any...and I must admit I was in some cases ready to take it off. So I feel Leica had it right by going back to the retro focus design and unpadded and I have thus taken off the o-ring as something that is not needed.
Two...The lack of rubber on the armor (another issue some people bring up) is obviously not an issue in this warmer climate. The grip is solid, the feel of the bins all told... I suppose in a colder climate you might feel the lack of rubber but hey, if you put rubber on this, you add weight, bulk...and you get something that is not a RETRO.
Third...the close focus of 12'. I never ran up against a view where the rather lengthy 12' got in the way. I have birded with retro many times in the past 15 months and have from time to time noticed that I wanted a closer focus. To view butterflies mainly. Now I suppose if I ran up against a rattlesnake, I might want closer to 12' or....I might feel that 12' was what forced me to stay away from it! ...either way, no snakes today and no need for >12'.
All told....the retro is my 'go-to' bin and there are multiple reasons why.