Haven't decided yet. Still waiting for the FAQ, to see whether Suprathyroid Gland really isn't supposed to stack with Muscle Toner, Muscle Augmentation and Reaction Enhancers. Also need rules on modding armor, to see whether I can have one modded after I already have it. If so, paying extra once is worth the hassle, but if I have to get it all done in advance, it becomes required to use the Favor, for either a FBA or a Heavy MilSpec. And Pain Editor is also on my shortlist.