hmm depends I guess on what look(s) your going for? Margin to me is more peachy, rather than Sunbasque, which is a little more rose-y. Also, Margin is pretty frosty,so, reflective and shimmery. Whereas Sunbasque seems more like flecks of sparkles! It's a tough pick - they are similar but different at the same time!.. If it helps I gravitate more to Sunsabasque mostly because of the frossstyyy-ness of margin. Hope this helps/didn't make it a harder choice