I just got the Specialized Rockhopper last month. Of course, I prefer mountain biking Mine's in a "purty" blue as you call it - not the one attached to your link. I highly recommend getting measured for your bike. I ended up with a 15 " frame and customized handle bars (they cut off 2" on each end) because I'm so narrow in the the shoulders. Compared to my 18" road bike, I feel like I'm flying on the trails.

I second the shifting thing. The specialized shifts just the opposite as my diamondback and I still get it mixed up so make sure you're comfortable with what you get.

Have fun shopping - let us know what you end up getting!