In all honesty, I am not a fan of most 2x10's for use as a stand alone. They are bigger than you'd need for the clearly "low-volume" gigs (I like a 1x12, typically, in this scenario), and not loud enough for pretty much everything else. The only possible exception (with which I have direct experience) is the Mesa/Boogie PH210 (8-ohm). That cab is very "big" sounding for a 2x10 - which it should be; it is the biggest 2x10 I own. It is also my current top dawg 2x10 based upon tone (though several other brands are nipping at its heels).
As to the "neo or no neo" topic, there are great sounding cabs and awful sounding in both camps. I would not use it as a deciding factor. Granted, if you are weight-sensitive, then the use of neodymium-based magnets and other weight-savings techniques may be of greater value to you, personally. But ideally, let tone/volume/price/quality be your guide.
In addition to the PH210, some of the specific 2x10's which I feel are among the best would include (in no particular order): Bergantino AE210 and HS210, EA NL-210, Glockenklang Duo, Wayne Jones (if you can bring enough juice to push them!), and TecAmp S210. Honorable mentions should go to the old Ernie Ball Music Man Audiophile HD210 (very good cab, but heavy as heck, and no adjustable tweeter) and the Acme Low-BII (or III). With the right amp, in the right setting, these cabs are very impressive. But they are not a universal panacea. I have not spent a lot of time with the 210 version, but the new Ampeg Pro Neo 410 is really great, and I'd expect the PN210 to be quite good, as well. If you want a more vintage tone, then the SVT-210AV is worth a look, as well.
Hope this helps, Tom.