I like all the Irish Chain patterns but I agree the single is so simple, the double gives it more ???? and depending on how you do the triple, it can be amazing too. Have I think the triple on my shelf to do but my reason is I'm using a bunch of scraps from another quilt all in greens. The background will be a very dark green with a neutral as the 1st strip next to the dark green with all the other greens interplaying in the middle strip. Just my take on it. As you're using only 2 colors the double would look very nice.