I'm a 25 - Guardian now. I'm still on the fence about if i like it or not. I can sure take a lot of punishment, but the downside is that my dps kinda sucks. I sometimes switch over to a good two-handed weapon when I solo or when I'm in a group with another higher-level guardian.
I have a friend who is a 20 - Loremaster and is starting to like it. Like someone said earlier, he's getting increasingly more powerful as he gains more levels. I have another friend who's a 33 - champion, and she's loving it. Their armor seems samurai themed and her being japanese is really a turn-on for her. hehehe.
So far, I've been playing a little over 3 weeks, and I'm enjoying the game so far. Lots of quests to keep you busy and the experience gains through questing makes it the fastest option to level. It's funny groups are called fellowships and guilds are called kinships, so some of the terminology throws me off since I'm so used to EQ and WoW.
I also enjoy the LOTR mythology and books, so it's interesting to follow the quest lines that deal with Frodo's journey. It's also fun to explore how they implemented the geography of Middle Earth. I can't wait to finally make my way over to Rivendell, Gondor, Mt Doom, etc.
So...it's a good change from playing WoW and EQ2 which i canceled several months ago. I'll definitely stick with this until I get bored or until the next MORPG comes around.