I have only played Rift, WS, WoW, and Tera.
1. WoW - The feeling from downing a boss I've progressed on is awlays as rewarding, I love it. I want to include expansion starts too, but I dont know if it fits in on "current", daya before WOTLK release it started to snow here and me and my friends were so hyped on LK, they even camped outside the store for a few hours. DK starting area is quite literally the best momeny I had as a child, next to that would be when I killed Archi HC a week ago
There is something amazing with WoW's expansion releases, WoD and LK are my fav so far despite the drawbacks..
2. WS - WildStar on release day was so fun I forgot about WoW for a week, and I had a pretty shit computer so I'm super excited to try it out again now that I got a great computer and it going F2P! I quit after a week because WoW friends came back.
3. Tera - Beautiful, but it didn't fit me. I enjoyed startzones and its art, but it felt so distant. Also has constant 200-300 ms..
4. Rift - Ruft has been my go-to MMORPG when I get sick of WoW and still wanna play mmo, but its start area was really meh. It was fun the first time and all, but Durotar for the 8000th time still beats it.
So on a scale 1 to 10, in WoW I have had the best feelings, memories, and all. 10/10, but if I purely count WoD at lvl 100 I'd say 5/10, not that I think it's a bad expansion, but it put me off with the orcs after Highmaul, the garrisons, and the "legendary" ring. WildStar while I played it was 9/10 :3. I didn't play enough Tera to put an opinion on it, but based on start area: 10/10, and based on my feelings to it: 5/10. Rift falls below Tera but I'd still play rift over tera.. Hard to explain.
WoW is my childhood, the good parts of my childhood, so even if I quit, I will always enjoy coming back.
Reminder: ^^^subjective/my opinions/my experiences^^^ <3