Love mine! I bought it (very gently) used on the Yahoo group Sewitsforsale.
I do like strips done with it - fast and always perfectly straight - but love it for odd shapes and triangles. If you do applique, it's so much faster than tracing/cutting. And I'd never have done my tumbler quilt if I had to cut arond templates for all those pieces. Triangles also are a breeze, with the corners snipped everything matches up so nicely for sewing.