I had a Bernina a few years ago - at the time it was top of the line and it was a piece of s........ i couldn't even make buttonholes on a wool jacket!!! It would not sew through 2 thickness of wool plus interfacing - some machine!!
darlene
P.S. I have heard from an expert in all the machine, Viking, Phaff, Bernina, etc. that Babylock is your best bet.