I bought my Singer Quantum 9240 from HSN on the payment plan before it was in the shops. This has been years ago. It is a great machine and I have not had any problems with it. I bought it for the decorative stitching as I was not quilting then. The Quantum sews and performs like my Bernina 1260. It's heavy as it has metal frame and gears. My Quantum makes a straighter stitch then all my machines. I don't know about the newer Singer machines but with HSN you can test it out for 30 days and return it for a full refund.
I like to watch the sewing shows on HSN, it's like a mini sewing class.