I buy Aurafil on sale and like it so much better than CT even though my machine isn't fussy it's just nicer.
This is me, too. Aurifil is much thinner than CT so it sinks into the seam better for more accurate piecing. Plus it's much less linty than CT thread so I can sew much longer before I have to clean out my machine. And as a bonus...since it is so much thinner, a LOT more fits on the bobbin!
I do like CT thread, though, and often use it for my quilting or decorative stitches. There the thicker CT thread is better because it stays more visible, and while it's lintier than Aurifil it's nothing my machine can't handle. Plus with CT thread prices I can afford to keep a whole rainbow of colors on hand.