The 5 year warranty (and in my WHM experience on site repair) could be really impotant to some people, if the 1 year warranty doesn't trip your risk factor then I would get the G514X2 if nothing else for the foot brake, this is a requirement for me on anything larger than 14" for the reasons Dave illustrated. The rest of the major differences are a non-issue to me. I have used the "new" Jet and it is a solid saw, on sale now it is a very resonable price.