I have two Bernina and would almost cut off my arm rather than give either of them up. My friend has a Janome, forget the number but the top of the line when she bought it a couple of years ago and I have used it at her home. IMO the Bernina is far superior-- the Janome has plastic bobbins and the presser feet are not nearly as well made as the Bernina. When comparing the stitches side by side the Bernina looked more balanced and perfect while the Janome not so much! The bobbin being a drop in is a nuisance when sewing on the Janome and then I compared buttonholes and again the Bernina was superior. Now don't take my word for it, go to a dealer and compare side by side the quality of parts and pieces, the stitches made and then make your own educated decision.
Sue