None. The additional war points that you earn from using a GEK aren't worth the cost if you're looking from an economics perspective. The standard is the most cost-efficient option at the moment.

if more ppl use better gear tht = more money = better gear. see the logic. thts why u use good gear in pub matches. u kill better stuff u get better rewards also it's fun to destroy everyone.

I run the freebie suit + a gun and some modules. Mostly militia gear though. I'm definitely profiting when I do this as I can die up to 6-8 times and still make money. I'd generally say this system is pretty fair as you can base a loadout on a freebie suit and just replace a few items at cost. The freebie suits are themselves a pretty good fallback when you're broke, and with them it's pure profit.

Eventually you're gonna want to gain some of the advantages of better gear, either to push a close game to a win, or maybe blow your funding on a corporate war to ensure you're giving it your all where it counts. Seems like that is the purpose of full spec'd loadouts, not necessarily a "full time" loadout, but more of a choice for when you wanna play hard.

I typically start out with my more pricy loadout (only 20k ;p) but if I feel like it's a losing battle and everyone is getting spawn camped, I'll swap out to my freebie stuff and just run n gun. If the game gets close and I want an edge I'll pull out the cost loadout again.

I haven't participated in a corp battle yet, but when I do I intent to throw all considerations of profit aside and run full spec till my bank breaks if that's what it takes. I can play pubs with freebie gear to make it back..

the isk I make is very little depended on performance, regardless of how well I do it seems always close to 200k for one skimersish match.

could be

7-0

2-5

etc...

It fluctuates but more so close to 200, usually just under.