Good! I am very pleased with it. Quite large and heavy compared to my other eyepieces (see the eyepiece photo section for my collection).
Overall, really good value for money. The FOV (82) is about as large as you want. I have quite a long focal length (2350mm), so it makes x157. I am finding that I pretty much use only two eyepieces most nights: my 32mm TV plossl for low power or the Axiom for medium-high power. The GOTO on my scope is really good, so even if I am using the 15mm each object is near centre everytime.
I have looked through many naglers in the past, but not recently to do a direct comparison. (Except for my 4.8mm Nagler but that is hardly a comparison!!). I do have a range of plossls (Televue, Celestron, Sirius), and the Axiom stacks up well to them.
I would say, the Axiom is good value for money. If you don't want to spend huge, but want a decent 82 FOV then it is a good buy. Mine was $175 new including freight from the US. It is 1.25", which is why I got it. I wish they had the 22mm in 1.25"... then I would get it too!
Hope that helps!