Hi there, I'm also planning a 3dr and thinking about access to a baby seat -
I'd convinced myself that a 3dr would be better as you could push the front seat forward and effectively crouch in the rear footwell, face backwards and fasten baby seat straps etc from square on.
I figured that with a 5dr it would be awkward - you'd end up reaching across the child seat, putting the baby in and fastening him in from the side, rather than face on?
I take it from this thread that it's my heart ruling my head then!? (sadly can't get a second car with 5drs!)
cheers