If you are doing straight line quilting you really need to use a walking foot. You can SID using the walking foot if it is open in the front. Since (as nhweaver sais) the walking foot feeds the top and bottom evenly you have less puckering than if you use the SID foot (sometimes that foot will dig in and do some stretching).
My current machine has the accufeed (an action similar to the walking foot) so I can use a SID foot. I normally use the open toe foot since I like to see where my stitches hit. I do go really slow for SID.