Remember that any tractor we purchase will need repair parts sooner or later (usually sooner). Any tractor purchased needs to have a decent support channel. Purchase a Deere, Massey or Kubota (and perhaps a couple of other brands) and one can get anything. Individual screws, washers, etc. are all listed in their parts manual and are immediately available. This support is really part of the purchase price.
Nothing is worse than having your equipment down because of some %$#@ part that nobody seems to be able to find.