Thanks for the info. I'm glad to know it doesn't matter the fabric. Stitches could be an issue. I also found the tension was trickier to get right with the walking foot on using a straight stitch on the cotton fabric, but it was fine with the stretch stitch on the swim fabric.
Also, I will say it is a little noisy, but I think it's the slower speed that will make me take it off. I also do lots of zippers and button holes and it's more of an effort to switch back to those.
@Lachica I had use of a Pfaff (lent to me by my amazing landlord) for the 9 months I lived in Switzerland, and I loved it. The IDT was everything! I had to buy a new machine when I moved here and was gonna get a Pfaff. But unfortunately Pfaff isn't very common in south-east asia. And in my city there are only 2 dealers...Brother and Singer. So if I ever need repair or servicing I'm better off with one of those.