Well, the most frequently match with A.R. gear is probably Vandersteen. Used the 3A or 4 both would fit your price range.
The Nola Contender used is worthy of consideration, and I believe they were voiced using Audio Research gear which is a favorite of the Nola team.
Two lesser known but good value options are Silverline Sonatas, which strangely have 3 pair on Agon now, and the Acoustic Zen Adagio.
Of course, listening if possible is always recommended, but geography often makes it tough to do. At least with long-standing and well regarded brands like Vandersteen and Nola you won't be risking a lot if you decide that it's not what makes you happy. Cheers,
Spencer
