I'm trying to decide whether I should use armor enhance or nano recharge on my main class. I know what both do (slower drain on energy in armor mode, quicker health healing after being shot; and the upgrades), but I have a question in regards to armor enhance.

Does reducing drain speed also mean that, while in combat, you essentially have a longer amount of time in armor mode when being hit by bullets? Think of it this way: if two people have the same gun, but one has armor enhance and one doesn't, and they both turn it on at the same time and start shooting each other with the same precision, will it be equal (or will the armor enhance guy win)? I say this because being hit by bullets "drains" your energy/armor quicker.

Probably a dumb question. (And, yes, I know nano recharge for health only works after you've stopped taking damage.)

I don't know. Good question though. I should test this out in MP tonight.

In theory, the guy with armor enhance would win if only armor worked the way it does in the campaing (no damages to health before the shields are down). BUT in MP, it only decreases the damages of the bullets, so anyway both of them will die before energy reaches 0. The only benefit is IF EVER you survive the fight, you'll have more energy left if you used Armor enhance.

And of course, you can use armor mode longer as the standard drain speed is reduced (I mean when you're taking no damage).

Armor enhance all the way. Armor is far more effective than health. I'd rather have more energy for shields than health for the little health you actually have in this game.

I've used armor enhance, nano recharge and energy transfer. I like them all about equally but the armor enhance doesn't mean you can take more bullets. It does let you walk around with it activated for longer though and that is actually helpful.

I've used armor enhance, nano recharge and energy transfer. I like them all about equally but the armor enhance doesn't mean you can take more bullets. It does let you walk around with it activated for longer though and that is actually helpful.
True, but having your health healed quicker and having your armor restored quicker are pretty much equal. And I'd much rather have the final upgrade of the nano recharge, which recharges all energy faster. The armor enhance upgrades aren't as important to me.