Cabin for cabin, I'd have the Citigo every time. Other posters have commented on most things worth thinking about, all I can is that it feels like a much bigger car to drive, and I have a 34 mile round trip daily communte encompassing fast B roads and dual carriageways and the Citigo is simply brilliant at all times and is great fun to drive. Fabia is great for space, but their are better models than the Reaction.

I'd agree with that except for the lack of steering wheel reach adjustment on the Citigo - I find it quite uncomfortable on long drives, but that may suit others better. Also the Citigo's fuel economy will at least 20mpg better

^^ I forgot about the lack of reach adjustment - never something I've bothered about. I set it when I first got the Fabia, but purely out of what I thought looked better aesthetics-wise in the cabin than any ergonomic reason. My arms can cope with the what felt like about an inch of play the reach adjustment gave me. For me, height adjustment is much more important to ensure I can see the instruments cleanly.