I have the 7530 also. I bought it new and have used it hard and put it away wet! I told the dealer not to sell me any junk as I would sew anything I could get under the foot and I wasn't kidding. I have sewn upholstery, fur, double knits, denims, sheer stuff, and it never blinked. It's about 13 or 14 years old and I would recommend one of these for anyone and I wouldn't be afraid to buy a used one like it. Mine doesn't have the embroidery unit but I have a Babylock that does so I can do just about anything I want.