I would say the 550 would probably be the best machine if you need a work horse. I purchased a 215 and was very unhappy so I took it back is a short time and traded for a 530. It's a much better machine. I also have a 153 QE and a 440 QE. My BSR is interchangeable with the 440 and the 530. The 440 embroiders too and all the feet are interchangeable between all three machines. Go to your dealer and try them all out and decide which one fits your needs, but the 550 is more expensive, but it is also the one that will probably last the longest.