I like to play vs AIX with following mods:
Blackops:ACUs, to make your ACU more useful in the front lines,
Advanced shields, though they are not used by the AI so it kinda gives you an advantage, unless the game settings are challenging, in which case building the first shield and providing power requirements for it is quite difficult
Blackops:Unleashed, because it brings in a small number of very well made and balanced units.
Total Mayhem is fun, however some of their units (specially turrets) are greatly overpowered, for the price.
better reclaim view - highly recommend that one
Check out my 2 maps: "Survival_Mayhem&BO_3d_v1" "Survival_Mayhem&BO_3d_RPG"
as well as my mod: "Survival Mayhem&BO balance"
-- let me know of any bugs or issues regarding those 3.