Unfortunately, asking whether asking a Fiat is worth it on a Micra forum won't get you far really - we're all a little biased
However, what i will say, is go with your heart. If you want this car, it looks sound and the insurance isn't going to suck, look into the car, reviews etc, and if you still like it then go for it - after all, we only live once
What i will also say though, is that Fiats do live up to their names - Fix It Again Tony. Fiats can be notoriously unreliable, and especially a turbo'd one could leave you out of pocket if it goes wrong.
But at the end of the day, it's up to you mate.
It'll be sad to loose another Micra owner, but we all have to move on eventually.
Good luck with whatever you decide mate