My shed currently has 5 Masseys' 5 Deere's a Kubota, 4 Fords, and 2 IH tractors sitting in it, all of various ages. They all need parts on occasion. Without a doubt, the Fords (New Holland) and the Kubota cause me the most anxiety when I gotta pay the bill.
The Deere's aren't cheap, but I never have to explain to my grandson what "NLA" means.
The Masseys are usually the cheapest parts, but not always.
IH, which may be as a result of the mediocre dealer I have to work with, always takes a few extra days. Cost is relatively close to Deere.