I've cut my fair share of aluminum, and I've polished a bit too. Your not going to get a fine shine without using abrasive and a cloth wheel. There are strategies you can do to make the buffing task as painless as possible, by using various techniques, and certain cutters, but you will
not eliminate the need for buffing. I should also advise you that the buffing task itself is a bit of an art form, and takes a whoooooole lot of practice to even get decent results. I'm not trying to dissuade you by any means, just trying to give you an honest reply from experience. Best of luck to you, it's going to be quiet a learning curve if your as finicky with quality as most of us are. You might find the finishing forums at Caswell useful.
http://forum.caswellplating.com/ I certainly have.