Many thanks for all the great feedback! I must say, a decision isn't coming quickly, but thanks for helping narrow it down to a few good choices. I am not familiar with Jacob's Ladder or Storm at Sea patterns; could someone post a link? I had thought of a bargello, but wasn't sure how it would look in a king size quilt. Has anyone made a king size bargello?
I have quilted off and on for a few years, primarily smaller quilts for charities. Most of my patterns are simple, requiring only a mat, rotary cutter and chain sewing on the machine. :) I think some of your ideas will work great for our quilt group at church.
Thanks again for the great suggestions!