Little used equipments, and how to use them?

I was interested by Arkhne's comment about usage of Targeting VIs. You are not alone sir, I use them enough that I have only 158 VI 3's compared to 255/252 for the lower levels. And this is after a recent store spending spree, getting up all my equipment to 255 with Jumbo Packs, then spending a 200k on Vet packs to get Adrenaline, and then another 240k on Spectre Packs, because I'm riotch biotch.

Anyways, I like Targeting VI. Using it on the SI is like cheating, and really what other equipment does a sniping SI need other than Op Gear and some sort of weapon-appropriate ammo? Because he is so versatile and rugged, level 1 SI with Op Gear, Valiant with Disruptor Ammo 2, Power Amp 2, Targeting VI 3, a point in Cloak and a point in Energy Drain, and he will usually dominate the quick match pug field. Usually = almost always, in fact just plain always unless there's a darned BSNer to kill things too fast and ruin all my sco ho superbo.

I use Stabilization for some guns/kits. I use Efficiency rarely, maybe on a Vanguard, but they get some use.

I don't have a fucking clue what to do with Shield Power Cells. I will trade all 765 of mine for 20 Adrenaline module 2s.

Biower pls allow player equipment trading in MEA.