I've been looking into the process of tagging for a few weeks now, but I haven't taken the leap with an app that will do all of the tagging that I need. The reason Spotlight comments don't work for me needs is there is no auto-complete on existing comments; if there was I'd have no problem. Anyway, today I ran across MailTags. I'd been looking at Tags from GravityApps, and now I'm wondering which one to go with. They are priced the same, but MailTags (obviously) only works with Mail.app while Tags works with almost every app. I don't know if Tags has as many features, but my search is just starting. Anyone have any experience w/ these two apps side by side?