We followed along the same lines as Hugh did. Sent emails stating what unit we wanted along with the options. Sent to 3 major dealers within 500 miles of us. Got 3 replies. All were farely close to each other. (2-3k difference) RVsForLess gave the best price so we took a trip down to see them. We spent about 2 hours talking to the owners and also lisening to thier suggestion on what options were good choices and those that were not. In the end they saved us even more money, got more coach than initially went in for and have been treated quite well after the sale. (we ordered) So...my suggestion is to start by giving multible dealers your wish list and start eliminating by thier responses.
Good Luck