Labour is very painful, i remember my last labour well, it was very long, and i was really tired, they gave me a co-codemol pill, which done nothing, what a joke! So i wouldn't go for that one.
A lot later on finally they offered me gas and air, what a luxury, it didn't take away the pain at all, but gave me something to focus on doing. Breathing really helped, any kind of breathing techniques are really worth learning, and water, and massage, all really help. The main thing is to stay relaxed.
At the very end they gave me a minuet dose of diamorphine, which didn't seem to effect me at all, did not take away pain, but remember that it made me a bit chatty, basically felt like I'd just smoked a cigarette, but a bad choice, as it did was made me sick, and they said they gave it with anti sickness meds. Won't be doing that again!