Returning player, Looking for semi active server

[Mareppa]

On the subject of figuring out whether I want to spend the money on this game again, is there a way I can learn more about Ambuscade, Odyssey, and Sortie (other than reading the wiki). Any let's plays? reviews you can point me to? Are they fun? Or people do them because they get something out of it, like equipment or something, like a quest attempting to reach the ultimate god state.

I appreciate the info so far. I'm intrigued. I tried out trust on my character for the first time and it was fun. But no way in hell am I going to get to 99 in 1 day. I don't have a power level, and I still need to do all the quests, I don't even have a subjob yet. No gear, etc.

A thought about trust (not that it matters now since this system has been in place for how-many-years): if it was restricted to two alter egos, then you could solo in groups of three and still get your basic tank, healer, DD, and if you wanted a full party, you'd have to at least invite 4 people. But that's just me thinking of alternatives as I do.