Rogue is my current favorite toon. "I'm a natural" was my battle cry yesterday. I picked a tall slim(ish..) Half-Orc after having a short squatty Dorf Paladin (that looks good riding a tiger, unlike the taller races, which, of course is cool, because, well, who doesn't want to look good riding a tiger). Critical Severity (one of their Racials) isn't a common stat on gear (I've not seen it once yet) is mostly why I picked him and a half orc swinging and throwing bladed weapons seems to work RPwise.
Wizard is the next toon I want to try. They get that shield and an extra Encounter slot which could be gold, and, they get a similar evasion ability as Warlocks that I've grown to like a lot. Well, and, they look similar to playing a Warlock except with better deeps.
Warlock is on the shelf unless I want to play him in the big(ger) kid queues as a healer. He's just good enough at it to make it fun and worthwhile but really, I made him for Deeps, soo, yeah...shelf, mostly.
Fighter Tanks look worthy, too, will be trying one of those, eventually.
Fun stuff.