Rather than having us provide you with a list of the things we use our machines for, please take some time to identify the things you would like to do with your new machine. The features we may think are important for us may not be as important to you and your sewing needs/desires. Some examples.
If applique work is something you would like to do? Then some of the nice decorative stitches would be useful. These could also be useful for certain styles of scrap quilting.
Would you like to embroider? Then a machine with that capability could be in your future. Some machines are available, where the embroidery attachments can be added at a later date, too.
Would you be doing any Free Motion Quilting? Then perhaps a Bernina with the built-in Stitch Regulator may be desired.
Most newer machines by the manufacturers you listed have all the various feet available. The Pfaff, for instance, has a built in dual feed system.
It would be very difficult to go wrong with a machine from any of the manufacturers you listed. It all just boils down to the features you desire and how you like the machine.