A little less than a month ago I purchased the Fieldscope III non-ED angled model, and the 20 x 60 zoom. As the summer in northern California is not a busy birding time, I can't say we've fully put the scope through its paces, but so far it is great. At or near its very highest power, the image is a little dark and therefore hard to focus on quickly and surely. I heard this would be the case before I got the scope and expected it. For the rest of the range of the zoom, meaning the remaining 92 per cent, the scope and lense perform wonderfully; the image produced overall is bright and clear and wonderful. I wanted a metal body. I liked the idea of the focus ring around the entire body of the scope, a pretty unique feature in scopes. I thought it would be wonderfully easy to use, better than using a small knob. This still may turn out to be true, but the jury is still out. In the end I might wish the focusing ring turned with more resistance and more slowly. There may also be variation in the feel of focus rings from scope to scope - I don't know. The vue thru case is the most amazingly complicated case ever made - it's kinda cool and kinda silly. You won't lose this that or the other section of the case, 'cause everything's attached to everything with cords and velcro and snaps and zippers. Unless I haven't learned how to use the case and scope together yet, I'll say my only true complaint is that the focus ring is cumbersome to find and manipulate while the case is on the scope. This should not be so.
I wrung my hands for weeks and months trying to decide on which scope to buy; it is by no means a high end scope, but it's high end for me. I am really, really happy with it. I say this with the qualifier that I did not try out and compare a bunch of scopes side by side. I made the choice by reading and searching for information obsessively. The only different choice I might have made would to have saved for a somewhat bigger objective lense. But the trade off would have been, the scope wouldn't fit in my backback.
Please feel free to contact me or ask any questions you think I might be able to answer. I would have loved to have someone with experience with the scope to interrogate. Would love to hear what you decide.