Jottin and reqall

So I've recently started using a couple services to facilitate my mobile lifestyle. "Jott" and "Reqall" The basic premise of both is that you call in to a special number, apply some voice commands, and then you get speech to text conversion with some additional functionality to produce emails, blog posts, calendar updates, todo lists etc. As I understand it reqall's been around longer, but I find as I start using twitter more, the extensible nature of jott will probably win me over. After all, the command can be used to interact with nearly any simple RESTful service. I'll post back with how well they've worked out for me.