I have one and it works really well. Mine has the 20-60 eyepiece. I traded into several years ago and never could find a reason
to upgrade(spend more).Make sure and get a decent tripod and your good to go.
I've done a whole lot of research on big spotters and this one gets a lot of good reviews; especially in its price range. Most of the reviews I've read are from bird watchers, and they are a picky bunch.