I went downtown to run an errand for my husband this morning and made the mistake of going into our local sewing store. I came out with my head spinning and stars in my eyes. I was looking at the Pfaff Quilt Expression 4.0 ($2299), and the Babylock Espire ($2499) and Quest ($1899). They also had a used Pfaff 4872 serger for $595. This would be a big step up for me but I just retired and have lots of time to indulge my sewing fantasies. Any opinions on the pros and cons of any of these machines? Thanks!