I like Creative Grids rulers. There is a ruler for every shape or cut you need and all from one manufacturer. Most all quilt shops have them and they are easy to find online.
I am excited to be going to Paducah. I watched the blogs and newsletters for free stuff at the show. I got a free admission ticket to the show, one 30% and one 25% off coupons for Quilt in a Day store, and many coupons to pick up free gifts by visiting various vendor booths. If you renew or get a new subscription to AQS magazine at the show you will get a free gift. This year it's a sliding quilt calculator selling for $13. Vendors aren't allowed to have but one show special price for one item so lots give out coupons for sample or free gift so you will visit their booth.