My favorite rulers are the Olfa Frosted Advantage because they don't slip (really!), the lines are narrow, they're easy to see through on both light and dark fabrics, they come with many different angle lines (the 6"x24" one has 15º, 30º, 45º, 60º, and 90º in a full arc), and they're pure pleasure to use. I have the long one and two square ones (4½" and 9½"). A large square is on my wish list.
I also love my O'lipfa lip edge 5"x24" ruler, but I know a lot of people don't like them at all. I use it mostly when I want to cut strips fast. I also have dedicated 60º and 45º triangle rulers, but no other 'specialty' rulers.
I'm a charter member of the 'Hate Omnigrip/Omnigrid Club' because they're so blessed busy that accuracy is impossible. I was so eager to get rid of the nasty thing, I mailed it all the way across the country, free of charge, to someone who said they'd love to have it. It was either that or 'frisbee' it into the woods! Wonder if they still have it???
