Yeah - Blue Moon has some models that you just can't find anywhere else. And their resins are nice and solid.
A good review of one of the models that I don't own, at least yet.
And yeah, painting whitewalls sounds like a pain. I might try priming in white, using a compass to create a circle on the wheel, then filling the resulting divot in the hub after painting the tire. I am not sure if this would work, but generally it is much easier to paint black on white rather than the opposite.
For vehicles my favorite in their lines is the hearse in their Wagons HO! line.
Good for everything from a vampire game to a jazz funeral.
Now if only they would do a steam truck....
The Auld Grump