I'm looking for a machine for my daughter's (28th) Birthday. Just told me a few weeks ago she wants to learn to quilt (after many years of me wanting to teach her to sew-now she wants to). Any info on these Brother machines will be helpful. Likes/Dislikes...problems with them. CS-6000i, CP-7500, XL-3750 or SQ-9000. I've found them on Ebay, Overstock & Amazon. Some new, used and refurbished. Any problems getting a refurbished machine ? Thanks