Choosing a 1930s American Sedan

[likaleica]

I am after a reasonably practical/usable American four door large sedan(saloon)from the 1930s and I'm hoping for some help from any American car buffs out there.
Important factors are drivability, spares availability and ease of maintenance.
Seen a 1936 McLaughlin Buick 90 Limited Limousine and a 1939 Plymouth Deluxe - and would be interested to hear from anyone who knows the pros and cons of these or can suggest alternatives. Thanks fellas !