I have to admit I've had two inductions and two natural births, and it was with the inductions that I ended up with pain relief both times. It goes much fater so you don't get to build on your pain threshold IYKWIM. Also remember Shez that u/s can be very deceiving when it comes to size of bubs.

BTW DH was 10lb 12oz and was birthed naturally. I was still concerned so talked to my ob about big babies being heiriditary and he reckons it's not true!