I have been looking at two spotting scopes that are approx. the same money. Nikon Fieldscope 60 ED w/ 20x60 eyepiece and a Kowa TSN 663 w/ 20x60 eyepiece. I'm a birder/outdoors guy. Have a digital Nikon Camera. This will be used mainly for birding. I've been looking thru both of them for weeks and would like some feed-back. The one item I like with the Nikon is the focus collar/ it is user freindly, the viewing image doesn't "jiggle" as easily as when using the knob at the top with the Kowa for focusing. The one item I like with the Kowa is the eyepiece collar fits my eye nicely. What I'm trying to decide is which of these two has better clarity/sharpness and brightness while viewing.