Originally Posted by BKrenning

Your frame looks like it is a Grace Pinnacle which will take a machine with up to an 18" throat unless Bernina has ordered the carriage to be modified somehow but I don't know why they would do that.

I do have to say that seeing the picture of the high end sewing/embroidery machine sitting on a quilt frame is a little startling. You really only need a straight stitch machine for machine quilting. I thought my Elna 7200 was overkill but I bought it to do both frame quilting & everything else which it did very well for 5 years before I got a Voyager.

I don't know what other advantages upgrading your 430 to an 820/830 might give you but I would use the money for a used Nolting or HandiQuilter unless you really want some of the other features on the 820/830.