Best guards you can kill, for exp and loot, are Trolls or Dwarves. If you are
an evil race- don't do the Troll Bashers, you'll loose the ability to go into
Grobb after one or two. If you are a good character- by all means kill the
DWARVES. You can kill the two guards by the docks in Butcherblock Mountains
without taking any faction hits. Their weapons and coin loot off of one dwarven
guard is like 20pp. I don't remember what level they are, but I'm pretty sure
they are around 32 or so.

Now, these guards don't do crap to save PCs. They just keep stuff from
wandering into the dock area. At level 8, my ranger ran past them with an aqua
goblin wizard casting on him (these make mince meat out of level 8s). I ran all
the way to the docks before I died (which was well past the guards). I have
never seen them attack MOBs if they engauged with a PC, so no moral dilema of
removing the "protection of newbies".

Hope that helps. They are a great source of income especially if you want to
start something expensive- like jewelcrafting.

Tearfall- DE Necro
16th Level of Pain and Suffering
-amoung others-