I have a Janome 6600 on order (it hasn't come yet because we've got snow and ice here! rats!). Mostly to improve my FMQ capabilities, it's true. But a friend here has one (Katrine on the board) and HER piecing is perfection personified! With the 1/4" foot, you can move the needle position by small increments to make it scant, spot on or generous, whichever you want. This link is a UK site but I put it up to show the foot - you see it has a little guide at one side to keep the edge of your fabric straight? And the Acufeed system will ensure that the fabric feeds evenly.
http://www.sewdevine.co.uk/product_i...roducts_id=468
:-D
EDITED to say - sorry, should have started with 'hello and welcome to the board'! :D