First was an induction so not relevant

Second started with hind waters breaking. Contractions started after an hour or so but didn't get serious for a while and then we went from nothing serious to baby out very quickly.
Third started with hind waters breaking. Took aaaaaaaages for anything to happen this time but again, once things started happening things moved pretty quickly, although not as quickly as #2

I would say my second and third were very similar, and wonder if DD3's labour would have been around the same speed as DD2's had DD3 not been (and stayed) posterior.