I love Protoshare's Twitter Bootstrap stencils but unfortunatly I can't afford to use Protoshare. I'm using Evolus Pencil instead but not really happy with the stencils provided. Does anyone know...

I am looking for a very good (easy to use, good drawings) mockup tool that allows u to draw up page prototype pages. I know of pencil, but I use an x64 firefox which I ve not found a pencil ...