I will say that I eventually treated myself to Alex Anderson's 4-in-1 tool. I needed a new seam ripper, and it also has a metal stiletto. The metal ones are great for when you're working with appliqué and starched edges. The wood stilettos tend to get soggy after a while, soaking up the starch. If you don't do a lot of appliqué, then the wood ones would work just fine.

The best thing about that 4-in-1 tool? It has square edges, so it never rolls off the table. :)