Personal thoughts on the classes like the OP requested.
<player>
Rogue is the only alt I got to 60+, before giving the character to a friend. I boxed a shammy, while my bro played an SK and chanter (fun box duo btw, if you have a pocket healer). Leveling was thus a snap, and we simple Tmapped or dungeon crawled most of the way up.
At the time we hadn't revamped traps, but I had a huge blast breaking and entering come night fall. Other rogues were out there, and it was a game, as to who could hit the valuable spots first. I had quite a route at the time.
<staff>
Not having leveled up a rogue, I don't know how big a difference the new traps make in terms of enjoyment of the class, and would be interested in hearing anything about them from the pre 65 crowd (its just a minor bonus at that point).
<player>
I never played a ranger here, but always thought they'd be fun.
<staff>
I imagine we don't have very good newbie quests for them though.