Try USA Horn (www.USAHORN.com) in Kenilworth NJ and Roberto's 
(www.robertoswoodwind.com) on 46th St. in NYC.

You can mail order several necks to try as well from all over.

Also, post your questions on the forum over at http://www.saxontheweb.net/

You'll get more responses and opinions then you know what to do with.

Keith