There is a used LS 27 listed right now for $4700. According to ARC it surpases the performance of the Ref 3. Particularly if your system is balanced, the LS 27 represents a strong contender in your price range.
While this may not be a concern to you, but consider the resale of ARC. At $4700 if it didn't fit your needs you're out very little.
While this may not be a concern to you, but consider the resale of ARC. At $4700 if it didn't fit your needs you're out very little.