Welcome to BF. There's a lot of information about completes on here, but to be honest damn near all of the recommendations are based on hearsay, brand respect due to sponsored riders, or spec sheets.
The bikes everyone will tell you to get are the DK 6-pack, Fit flow series, or Integral Bel-Air, but there's plenty of great bikes by other companies.
I would start by checking out all of your local shops and go from there. The Mirraco is probably fine, I doubt anyone on here has direct experience with it though. Starting out, you don't usually want a bike that's set up a specific way, so it's not always good to spend a whole lot on a bike just to find out you wanted to run a different setup and spend a lot in parts to get there, leaving a lot of perfectly good ones unused. Most people start with a lower end bike and find a riding style, then determine their ideal setup and get nice parts for that.