Thanks to everyone for all the help. I took LOML in to the store yesterday to put our hands on the lathes we were considering. After looking carefully at all the options, kicking tires, etc. I asked her opinion. She said "Well, I guess you better get the big one, we won't be happy with anything else". By big one, she meant the PM 3520B. Could you ask for anything more in a wife?
We had it delivered for $35 the same day. That comes out to $0.046 per pound, a good deal in my book. They set it down right where I wanted it with the legs already bolted on to the bed. Lots of fun and the machine is wonderful.