You can get any good thread to work on any machine but you might have to play with tensions, change your needle size and/or type, change your thread path to handle large cones or whiplashing threads like metallics, or slow down your speed.
Mercerized thread is normal, machine sewing & quilting thread. I think the previous poster was thinking about "glazed" cotton thread which is for hand piecing.
I have had to put some lines of Sewer's Aid down many spools of C&C thread and let it soak in for about 30 minutes before I could quilt with it. It was old or dry. Some of the very dark colors also seem to be thin in spots which drives the auto tension on my Elna crazy. It also fuzzes a lot so you will need to clean your bobbin area and needle bar frequently. I had some fuzz get sucked up into the tension assembly and I couldn't get it out myself. That was an $80 bill I wasn't very happy about and took 2 weeks out of my quilting time.