I usually last from about an hour to an hour and a half, it all depends. I'm guessing that comes under #2? I'm not sure.
As for 'detachment', I try to keep that off the cards as much as possible - sex is there to be revelled in, not endured whilst thinking about something else. One of the GF's friends told her about how her BF was more interested in watching Jay Leno than in her whilst screwing, now that just sounds pretty boring to me. I got VERY detached one time with the ex, as she did with me (it was towards the end of our relationship, things weren't easy between us and the sex wasn't that great by then anyway) and after about 3 hours and with no end in sight we cut our losses and went to bed; it was just turning into one long interminable soulless perma-fuck and to be honest it wasn't fun, it was depressing - I'm never going there again.
Instead of detachment I try to vary things up a little if I'm getting too close to the tipping point - a change of position or 3 (and the 30 seconds break from screwing that provides) goes a long way to prolonging the fun for both of us, as well as mixing things up to make them more interesting. As does switching to going down on her for a while if I really really need to calm down

I've gone for 3 and even 4 hours this way with the current GF on occassion by using enough breaks in the action, and it was a completely different experience to the time I mentioned above - and when it's time to blow, woah! Recommended!
The only problem with being a #2 is you don't have much scope for 'quickies'. I think the quickest I have been would be about 25-30 minutes - I just take a while to get there I guess. This obviously limits your options for getting rude quickly and getting away with it, say, on a night out if you have a chance to get away or something; but we still have fun, and she doesn't seem to mind that I'm not the fastest - the last guy she had was apparently a 'three-minute-man' consistently, and she says she's not really into being too quick anyway. My ex sometimes wanted me to just be as quick as possible and come so we could get on with something else, and it didn't make me feel good that she wanted it over and done with quickly or that I couldn't really do this for her, so I'm not really into being too quick either truth be told! Taking our time is much more fun
I guess the one time I can be 'quick' (of sorts) is when we've already been at it for a while and then she gets on top of me and rides me with the express intention of getting me to cum as soon as possible - there is a certain way she can do this when she wants to, and if I'm already quite worked up it's so difficult to hold back from letting go in a really earth-shattering way! I just feel stunned and completely out-of-it when we end up doing it this way, and she really gets off on the effect she's obviously just had on me!
As for refactory times I can definitely tell a difference between how I am now (25) and how I was when I was 18 or 19, but the increase in time isn't devastating, and as already mentioned it matters a lot how your partner treats you in between - I can still deliver 3 good loads a night when we get the chance
