Do you have ALL those listed as available for purchase? Lucky, lucky if you do.
Glad to know I'm not alone in my collection of 'well loved - still running GREAT' Singer sewing machines. Off the top of my head I can name the ones (and sometimes twos) of the models I have...Featherweight, 401, 501, 99, 15, 301...I think some have As in their numbers...but I need more coffee for that.
I agree get the one that the best condition for the money you can afford.