Great little scope, for sure.
ED or not ED? That will depend on how much performance you are trying to squeeze out of the scope. Yes, I would recommend the ED for 1) image quality at the top end, 50x or 60x and 2) digiscoping at any magnification. You will see a difference on both counts. Then, too, a lot of folks go ED on these small scopes
to try to recoup some of the resolution they lose by going to a smaller scope in the first place. No, that ED won't turn your scope into a big 80 mm scope, but it can bridge some of that difference. Lastly, there is a psychological factor to consider. Do you want to be constantly wondering if you should have gone with that ED version? I know this sounds kind of lame, but you wouldn't be the first person plagued with such doubts after buying scope.Nikon Fieldscope
eyepieces are excellent, with one glaring shortcoming, namely eye relief on the zooms, both the older 20-45x (really bad) and the newer 20-60x. If you wear glasses
and want a full field of view, then, go with one of the WA fixed powers. They all have long eye relief and you'll love those wider fields of view.
? If it is a matter of weight and portability, a better choice is a Kowa
600 series (601 or 603 if you want ED). Significantly lighter scope than the Fieldscope III 60mm and a Kowa
zoom 20-60 is a great eyepiece if you wear glasses
, unlike the Nikon