We have had 3 civics and currently have a 2009. That isnt to say they are bad, we just lease a lot. We have also had nearly every other model and have loved all of them.
I find that the civic is pretty zippy for that class of car. It has a surprisingly large trunk. The back seat is more comfortable than the Fit we have. Our gas mileage is about the same as the Fit at over 30 mpg although the Fit is better on the highway.
I am a larger woman too...tall and wide!
and I have no issues with leg room or head space.
I havent seen the new model though so I cant say anything about interior space etc. but model changes on most models have tended to get bigger.
When we turned in our last leased Civic it was resold before we were even off the lot.