I have the Elna model that is like the 6600. They are great machines but with the 6300, all you would need is a walking foot. The accu-feed is attached but you still have screws to contend and there's not much space there to deal with that. They perform the same function so you'd not be giving up anything to go with a separate walking foot for both the 6300 and 6500. Had the 6300 been out when I bought my Elna, I'd probably have gone that route. The main thing you would give up going with the 6300 is fewer stitches and no alphabet.