I love these bins. I was having a problem with eye placement, particularly eye relief. I found I had to rest them on my nose with a few mm between the eyepiece and my eyes, even with the eyecups fully extended. That worked well but I have since purchased some soft rubber eyecups from Amazon, 32-36mm for under £10. Now I use the bins with eyecups fully down and I can bury my eyes into the soft rubber cups. I find this a vast improvement in terms of comfort/enjoyment. For birding, I wouldn't bother to spend a penny more on any other bins, I'm sure I wouldn't notice any difference in the views. I recommend these soft rubber eyecups to anyone having the same issue!! Love these bins now. I go out with them in the pouch on my belt, no straps and no eyepiece caps, ready to grab and use and I don't even notice they are there!