Have you tried the Quick Curve Ruler by Sew Kind of Wonderful? It's pretty awesome. An easy curve that doesn't require pinning to sew (bonus!) and has lots of wonderful patterns available. I'm pretty floored by all the wonderful shapes and designs that can be created with this one template. This is my second quilt created with this ruler and one of their patterns. The first was a baby quilt you can see here.
The pattern is called Urban Candy. I called this quilt Urban Flower Garden because I quilted graffiti style flowers into all the double loops and lattice cross hatching in the single loops.
P.S. As always - props to my rarely seen quilt holders. In this case, my oldest son.