Just wanted to add a couple more points.
An episiotomy always involves muscle, where as a tear will only tear what needs to be torn, (if you know what I mean..) it can range from a graze, to a 3rd degree.... usually the bad tears are as a result of women pushing the baby out, and not working with contractions and nearly always if they are birthing on their backs. However, what a lot of women often dont realise, is that an episiotomy, can also tear...beyond what would ever have happened in nature. Its a barbaric practice and actually very rarely required. The only time I have seen it done when it needed to be done, was a baby being born with both hands by her ears...and she kept peeking out and going back in....(mum was on her back though ) all the others have been performed to hurry things along.
Bon, perhaps you might like to consider a completely natural 3rd stage. You have less chance of PPH and the back up of synto if you do.