Every house has its story. What's yours?

I have a question about how things have been done in your house in relation to door mouldings and wall paper. I live in an old house which has a number of rooms in which many layers of wallpaper have been cast up over the year. Of course this is very voticeable wher the wallpaper meets the door moulding (which are probably as old as the first layer of wallpaper from way back when). Thus the wallpaper has been cut against the moulding (5-7 mm) rather than where the base of the moulding meets the wall. Fair enough with so many layers of wallpaper, but a bit tacky if you ask me.

Anyway, I've been doing a lot of renovating inside the house and a couplr of the rooms have been wallpapered. I've put the wallpaper up first and then the already-painted mouldings. I think that the sharp break/line between where the wallpaper starts and the moulding begins is nice. However, I have some friends that put up their mouldings first, paint them, and then put up their wallpaper , which the then cut 3-4 mm from where the "true" corner of the moulding and the wallpaper meet.. I don't really understand why or than that's just the way they do it. Does anybody have an explanation for me about this and how does the wallpaper meet the moulding in your house?

Here are a couple example photos I just took (sorry for the poor quality, but I'll try to get some better ones up later. The talented wife is asleep and I don't dare wake her up to take a couple pictures of mouldings.):

This is one where I wallpapered first and then put up the painted moulding.

This is one that has tons of layers of wallpaper cut against the moulding at around 5mm from the "true" corner (blasted shadow!)