[Abeox]

neurotic :
No doubt SE FAILS

[CerGoltana]

Theres lots of Lamia, mamools, and Troll Merc NMs that roam around, unclaimed with no real purpose. You should ffxiclopedia.org and find the list of The upper Tier AU Beast races with higher lv NMs

For Instance: You CAN fight Gurfurlur The Menacing before they reach you in besieged. However, I think it only decreases their force influence. Heavily guarded NMs tho @_@

Gluck

[Xmacabrex]

gogo sandworm

[Atrox]

if you want some challenging nms that are almost always going to be there and will give a great chalange but may not have any worthwhile drops, try doing toa hnm from besieged in their home areas. most/many of the nms from besieged will be up and wandering around in the depths of their home areas (gugol ja ja, medusa, ect), and while the majority of them dont have very worthwhile drops, they offer a large chalange and have not been defeated many times in their home areas. plus you will et cool titles that most people dont have, and it will keep them from poping in the next besieged of their type. i also believe iv read somthing abut besieged level being reset when a toa king type mob.

plus theres stuff like big bomb and a few other nm with decent drops that you can do while your in those areas.