Look at your list of what you want and determine how important each is and what your must haves are. I have a Pfaff Performance 5.0 which I purchased because I wanted a larger throat opening for quilting but I also have a Pfaff Select 3 which I take to classes and use as a back up machine. It doesn't have up/down or thread cutter and has a much smaller throat opening (6.5" compared to 10") but for a class it is much lighter, the feature I miss the most is the needle up/down. I would ask the dealer what type of warranty he can offer on the used machines and that may help you decide. From experience if you don't buy a machine with the features you really you won't be happy and it sounds like the wider throat opening is a big priority you are looking for. Good luck in your search.