This is a very nice machine to use and since it is a straight stitch only machine there isn't much that can wrong with it. I would suggest that you ask to sew a little on it to make sure it doesn't have any tension issues. I have had one for a little over a year and do mostly simple meandering quilting, but I can whip off a lap or crib quilt in an afternoon unless something shiny catches my eye :)
I am sure that someday I will want a machine with more throat space but the Pfaff certainly is easier than wrestling it through my smaller machines.