Seems to me the question is how much do you want to do over how much the system you choose does, Bears unit seems to do all of the mundane things for you i.e. no blending block to clean, no plastic to stir, maintains heat throughout the process, seems a little easier to handle than the big twinjector setup so to me it's about how fast do you want to produce and how much prep/re-prep do you want to do to make the final product. I just hope threads like these continue cause you can bet your backside that improvements to these systems and one's not out yet are a direct result of civilized discussions on these systems.