I love my Rancilio Sylvia, and I have a Rocky grinder. The grinder is at least as important as the espresso maker. It's amazing how many different kinds of machines there are, and how differently they all function.
I bought mine from wholelattelove.com. They have lots of reviews, and their customer service is terrific. I also got a lot of information from the forums at CoffeeGeek.com:
I pored over this stuff for days and days before I made my choice. The only change I would have made would have been on the grinder, I would have bought the doserless Rocky vs. the doser Rocky. I didn't take the time to understand the difference.