You're comparing a couple of different cars there really. I have always been a Renault fan and I was going to get a 182 myself, but bought the Fabia vRS in the end.
Interestingly though, I dont think I would have given the Fabia a single look if I had not have also owned an Octavia vRS. We bought the Octavia as an ex-lease car from my work whilst I still owned my previous Clio. I was nothing but impressed with the car when I took it for a drive and decided to buy it. The Octavia is a very capable car, but very different from the Clio and it depends on what you want out of a car.
My Octavia is re-mapped (215bhp) and has uprated brakes (though not necessarily needed on the Octy, but they look good! ), it's got all the toys we will ever need, is very comfortable and can fit 5 big adults in with luggage no problem (I even had two interior doors in the back the other day with the seats down). The only problem I have had with the car is a broken anti-roll bar link (my bad!) and a dodgy lambda sensor and the car had 87k on the clock when we bought it. I doubt the Clio would have given me that little trouble. The other thing I like, is that very few people know what the car is capable of (as Neo said with the Fabia), so play time is even more fun (especially with BMW drivers ). You won't get five minutes peice from the Chavvy's in a 182! Economy won't be much different between the two cars if that is an issue, although theres nothing better than not having to change gear when you want to give it some (torque for the win, lol!)!
Like I say, the Clio was one of my options when I was looking to replace my Clio 16v, but my experience with the Octavia made me look down a different avenue, which I dont regret as the Fabia is also a great car.
Here's a piccy of the Octy: