I have the 6600. Got it about 3 months ago. I haven't had very many problems with the fabric getting pulled under. I did purchase the single hole throat plate just haven't used it yet. The adjustable tension is so wonderful, I haven't used the walking foot yet. I would say you need to take into consideration the cost of the feet you want. Alot of feet come with the machine but the quarter inch walking foot,the single throat plate and the stitch in the ditch foot,and the quilting foot are all extra. So I did spend more then I thought I would. I would also hope you will get free classes so you can learn all the wonderful things you can do. This machine is amazing and I love it. Hope you get your new machine soon, which ever you choose.