The Zune HD launches today, and we know a bunch of you are considering picking one up, but want to know how it stacks up agains other items like the iPod touch, and even the older hard drive based Zune 120 (since they’re all on clearance now.) We’ve taken the liberty of putting together a size comparison gallery that puts the Zune HD up against those very items. Yup, check out our Zune HD size comparison gallery for all the goods.