I went for gil a lot of the time because you can make some really awsome weapons. I didnt have many problems with lack of HP or whatever. Although i wouldnt reccomend goin for gil all the time, it leaves you fairly weak.

I started with exp just so I could get stronger but after a few levels I went gil all the way (so I could upgrade and get the ultimate weapon). You don't need to be incredibly strong to complete the game so just doing exp is a waste.

Depends if im in the need for ammunition, if im stocked ill use it for exp

i waited till like level 3 or 4 then started giving my exp for money instead. every few levels i would then add the exp but i kept using my money obtained from the exp trade to upgrade my weapons and stock up on items. with enough upgrades and ammo you could make it so that you really dont have to worry about taking too many hits because with 1 gun set up for mid range and strong shooting, one for strong and long range, and one for fast shooting and shortrange, you would have a pretty good offense and defence as long ast the parts are good enough.

Half and half. Totally neutral. The game was so frickin easy that I could just do it that way and get through pretty happy. I alternated each time, first exp, then gil, then exp etc, though at the end Death Penalty is so powerful that you might aswell forget the exp and concentrate on health stuff.

Sorry I just can't vote for one or the other!