Mark,
CRT based RPTV is certainly the best value, and the best performance
overall.
My recommendation would be Mitsubishi first, Hitachi, Sony and Toshiba
second, maybe include Panasonic, and stay away from everything else.
Mitsubishi and Hitachi are the best in terms of customer support. All of
the first four are similar in terms of service support, with Hitachi getting
kudos for opening their service literature to any servicer for free.
Toshiba has been more tight on parts inventory in the past couple of years
and Sony is shrinking its internal service support network. Overall,
Mitsubishi is hard to beat. They seem to be responding to input from sales
and service dealers in the design of new products and perform well under
most signal conditions compared to the others. Some people like the
"stretch" modes on the Toshiba better.
Compare model to model and check the options for service. If your dealer
does not do his own service make sure that you buy a brand serviced by the
most experienced RPTV tech in your area.