I've got an older equivalent, it does everything I would imagine someone would need in a head unit.
You can navigate through all your music menus on an iPod/iPhone through the head unit too which is handy.
Assuming you've removed that above unit yourself and have the gap all ready, I'd do it yourself. It's as simple as getting a harness for your car and plugging it in, a couple of screws and you're away.
If you haven't, I know my old 2000 Mazda Capella required the dash to be dismantled, was a bitch of a job so I wouldn't recommend doing that yourself. Quality Car Audio in Chch is cheap, but I think their after sales support is pretty dodgy. Read reviews, theres heaps of places around. Super Cheap Auto etc.