Helios Aquila – 8.5x32 – I bought these since I was after a bino that was smaller than my 40s/50s so portable or in the car. After searching the reviews I was tempted with the x6.5 version but chose the x8.5 for no other reason than I wished to match my other 8x40s, but with waterproofing and smaller size. So, apart from the excellent service of FLO to get them to me in perfect condition and time, I confess that I really like these bins. The size and weight works well but the ergonomics (the actual positioning and feel in the hand) for me at least, is just perfect. Holding the bins is a joy, the focus wheel is accessible with both middle fingers; just a joy. So pleased that I got these, so cheap but actually much better than their price might suggest – oh, did I mention that they are water/fog proof?