I only SID when I'm in a hurry to get it done. Otherwise, whatever looks good is what you should do. Sometimes you want to frame a particular quilt pattern, then SID works well.
I'm a beginning/intermediate machine quilter - I've made enough quilts to know I'm not very good, but not enough to get better (YET!). As such, SID is sometimes the nicer looking of my attempts to machine quilt. But, like they say, practice makes perfect, so moving on to something else is the only way to learn.
Good luck with your machine quilting!