I'm with Acoustic...
We bought our 2005 (hull#312) because we could not find a used 310 anywhere! We love it! Of course, a few months after we purchased our boat, our dealer (Freeman Eckley in Vermillion, OH) had a 2001 for sale...that was last year, but, it still may be there (although I doubt it). Check the website at www.freeman-eckley.com. Happy hunting!