Need new Mobs to fight...

I've been playing with my new incarnate powers and seeing how much I can take on at once. Rather than stealthing through missions as fast as I can I've been enjoying clearing out everything on a map. For the most part I've been doing Radio/Newspaper Missions and Tips. Unfortunately it seems that these missions almost exclusivly contain: Malta, Carnies and CoT with just a few Longbow & Archanos. Even several of the story arcs I've gone back to seem to be Malta & Carnies.

Without going into AE, does anyone have some suggestions of a lvl 50 story arc or contact that will give missions that are NOT the groups I've listed above? I'd like to mix it up a bit, get some Crey, Freaks, omgno DE... Who are some good contacts?
I do have one of the guys in PI that does a bunch of the portals that I've reset a few times partway through. Wondering if people have some other contacts they like to wade through their arcs.


Thanks!

Well, for simplicity, if you like Rikti or Cimerorans, you've got contacts with infinite missions in RWZ and Cimerora. Likewise for Firebase Zulu.

Uni Kumen I think his name is in PI has an arc where each mish is a different enemy group. First is Banished Pantheon, then theres mishs with Axis Amerika, Demons, etc. Pretty good arc.

Ironblade - I figured someone would mention those options. I was tempted to play around in the Shard until I remembered how fast the Rularuu tear through my defense.

Scheol - Yeah, does look like my best option is going to be advancing Unai Kemen's arc and just reseting it after a bit. He has several of the enemy groups I haven't fought in a while so should be fun.

Johnny - For lower level content I'll pull out alts or TFs. I'm specifically pushing myself against increased difficulities, bosses, AVs, etc to challenge myself and my incarnate abilities. Unfortunately exemlaring to lower levels doesn't provide a challenge or test my incarnates (as they're disabled).

edit: nm Ironblade pointed it out already

bam!