Update to my initial review - this is the best!

There has been an update since my initial review, and performance is now superb. All in all, I think this is the best of several HTTP clients on the App Store. Its easy to use in every respect, and I love that it allows you to save requests within the interface (I guess there off in a plist or something) rather than saving them as standalone files (that youre sure to lose track of). Another plus -- for me, at least -- is that authentication and other headers are saved as part of the request so that you dont have to re-enter them.
This app saves me tons of time in testing RESTful services.

rcrooks about Rest Client