I have a bunch of vintage machines, mostly Singers, but also a Pfaff, a Brother and another one I'm not sure what it is ... I have a treadle, and 3 featherweights.. I sew on all of them.. and I really love my vintage machines..
I also have a Bernina 830 that I bought in about 1975 that has been a dream machine.. never a problem with that beauty.. I also have a Bernina 1230 that I love love love.
My new machine that my DH bought for me is a Pfaff Creative Vision machine that does everything but slice bread. It is the most wonderful machine I have ever had my hands on.
My favorite?? The one I'm using right now.. Which would I save from a fire... oh man, they would have to come get me cause I don't think I'd leave a one of them.. Actually my favorites are my new Pfaff and the Berninas.