I had a MW clone once - I loved that machine. It was made by Lucky. The pressure foot goes up just a little extra. The motor was powerful and it was a well made machine. It is a clone so very easy to keep cleaned up. Test it out for free motion. I love the little clovers - some on the base, some on the nose plate and some on the little round back cover. I would be thinking not everybody else has one. It is right up there with the others IMHO. I don't know much about the Pfaff because those don't seem to cross my path. I would assume it is a good machine though. The 99 is a cute little guy but they are just a little harder to clean than the MW. No reverse, bobbin winder is complicated. Clean up the 99 and put a HC on it... You could always set one machine up with a button hole maker and leave it set up so it is ready any time. I guess it all depends on what you are planning to sew with the machines....