The Magician's Tower

A friend of me were going to start exploring RoF (to busy with tons of alts in alaris).
Can anyone recommend one zone over another, or a set of quests thats good to repeat?
This is for characters 96-98. Thanks

Can knock out all of Grelleths Merc tasks in like an hour and a half. I know a friend of mine that does that over and over.

which zone is that?

Grelleth's Palace off of Shard's Landing.

http://rof.eqresource.com/grellethspalace.php