Time after time I am killed by a cloak player right next to me that I didn't see. If I am using prox alarm I at least know someone is near by, but it is often too late. I have a terrible time seeing cloaked enemies - I guess that is part of the point. Does anyone have any advice to help in this area?

I am sticking with cell v. rebel for the time being. I do like the game but I just don't know how to handle the nanosuit.

if youre wearing a nano suit hold up on the dpad for nano vision. You can see cloaked enemies heat signatures

forgot about that - I haven't used it yet. Does it deplete energy?

It has its own energy supply above your weapon info pane on the bottom right side of the screen

It does, but from a separate bar that only appears on the screen when you use it. I don't use Prox Alarm because when I hear it go off I stop and look for the enemy, slowing me down and making me an easier target. The best tactic I found was to know what a simmer of Cloak looks like as it speeds by. When you see it, jump in the air and Cloak yourself. Usually the enemy will uncloak and try to shoot at you, turning the table in your favor because now he's visible and and an easy target.

I don't know if this will help you but it helped me. Turn the game brightness up, I have mine at like 90. And keep your eyes on the radar for enemies, a lot of people fire and then cloak immediately, but they'll still be on the radar.