I have the Brother Innovis 900D, which is a 4x4 combo machine. HATE. It sits in my closet and I pull it out for embroidery only. I've considered selling it but we do use it to put names and initials on gifts and things like that, plus it's probably not worth much.
I've had it fixed and aligned 2 or 3 times and still the same problems. Partly, I think, because it is a low-shank machine with snap on feet but that thing is completely unable to feed fabric in a straight line (even with fighting with it to guide along the edge of the presser foot) and it does not do well with multiple layers. The zipper foot is also goofy - it's made to go on either side so it is twice as wide, defeating the purpose of a zipper foot. The regular foot also has a knob on the side that constantly gets stuck on the fabric. I also dislike it starting in the far left position, but that's personal preference.
I have a baby Bernina that works much better, without any of the fancy bells and whistles of the Brother, which has the automatic cut, computerized programmable stitches and even tells you when the bobbin is low. But if it doesn't sew right, what do those features get you?
Maybe I got a lemon? Except I've had it in for service MULTIPLE times and it behaved like this right out of the box so it's nothing that I did. It works fine with embroidery for the most part. I have to say that I'm annoyed you have to buy like the $4000 Bernina to get the automatic cut, though
