I've started looking for a used 18-20" vert saw. Seems Grob, DoAll, and Powermatic make up the majority of used offerings, with a few Delta 20"'s in the mix.
Thoughts on obvious advantages/deficiencies between brands? Other thoughts on features, etc?

There's a Doall 2013-V3 semi near by.. are these newer machines better/worse than the old ones? Has a variable frequency AC drive.