What Robin said.
There's nothing inherently wrong with many small P/T's, but they are what they are. Aluminium tables that are prone to distortion if mishandled (and how many delivery drivers or users can resist moving them by grabbing the tables?), plastic handles that break easily, knives that aren't particularly easy to remove and replace, thicknesser tables that aren't absolutely parallel to the cutter block and are difficult to adjust, fences that will easily go out of true if bashed by a board, etc etc. But find a good one, treat it carefully, and it'll get the job done.