The exit row (8) is marginally better than the other rows; maybe an extra inch of legroom.

The flipside is that given it's not that much more legroom (and some claim the seat cushions are harder, too--I've not noticed much difference as they all pretty much suck), you may want a seat in row 2 or 3 so you can get off the plane that much faster once you land. Believe me, spending even a few less seconds on a CRJ-200 is a good thing.