Do you need reversing camera and "self-parking"? You can find the former on pretty much all modern hatchbacks (Focus, Astra, etc), and the latter them on quite a lot but AFAIK not on the Civic.
Bear in mind that the spoiler of the civic limits rear visibility; some people hate it, some are not bothered.
Are there zipcars in your area? In London, hatchbacks are the most common zipcars (Hyundai i 30, Gold, Focus and a few others I now forget); not sure what it costs to sign up to zipcar, but it might be a cheap way to try a few hatchbacks for half a day or so.
Boot capacity is tricky to judge; the official specs mean very little, because everyone seems to measure it differently, plus an oddly shaped 400l boot may be less useful than a perfectly straight 360l one. E.g. the Golf is said to have one of the most spacious boots, supposedly better than the Focus, but we found the Focus better (easier to fit the pram + shopping bags).
Which? is one of the few sites which measures boot capacity up to the cargo cover and up to the roof; I find the former measurement more useful because most hatchbacks tend to be oddly shaped above the cargo line so making the most of that space is harder, plus I'd rather not block the rear view mirror completely.