I've only played two of those, WoW and GW.
World of Warcraft is fun for a while, I used to play on Instant 70 private servers because I couldn't be stuffed leveling up and having to go to tons of dungeons and instances to get good armor, but on Instant 70 servers (where you get the best armor free) it's more about who's got more skill not who's played for longer and got better armor :P
Oh and I loved guild wars when I played it, but I saved up for factions a while back. Then it just stopped working ._.
But IMO the best MMO out there is AoC. It's got great graphics really good combat-system. You can build your own houses and towns, and it also has some pretty cool fatalitys
Yeah sorry if I didn't answer your question but I didn't really understand it.
EDIT: If you're looking for a slow-paced MMO which is kinda like a survival sim try Wurm Online out. I used to love that game, so much that I broke my old computer for it haha.