I bought the 4452 as a birthday present for a friend. Upon my enquiry, she informed me that she would rate the machine 5 stars, saying "It has a smooth stitch, and there has been no nesting from the first stitch." I have no idea what that means, but evidently that equates to a "two thumbs up" review!
I ordered this machine on the advice of a friend who bought one - because we were both looking for one that will work on all types of fabric (thick denims & also silk). It is working very well for me, so far. Runs smoothly and easy to use. I love the drop-in bobbin feature (my old machine kept jamming in the bobbin area). I also ordered the carrying case that fits it, and I love it. Never had a case for my sewing machine, so this is a luxury!
I bought this for my husband, who makes quilts with me---we lost everything we had to a fire on July 24,2025, and this is our first purchase to start sewing again. He loves the machine, well worth the investment.