I am currently using a MOLLE II FLC. I think that the MOLLE I vests were a bit more adjustable and comfortable. Ours are free surplus, so cost wasn't really an issue, and either MOLLE vest beats the heck out of LC-2 suspenders and pistol belt in my book. Our SOP is to wear a stripped down LBV or LBE under heavy tactical armor, only using pouches on the belt, for the most part, since you can't get to the ones under the armor. If you delete the suspenders or the LBV, the belt has a tendency to fall.
We are in the process of getting MOLLE pocket compatible armor. I am seriously entertaining not wearing LBE or LBV at all when we get the new armor, putting the appropriate pouches on the armor (a radio, double bang, triple pistol mag, OC, handcuff and a couple of double rifle mag), and then just strapping the 6004 onto my trouser belt. I'll retain the LBV in my load-out bag for scouting.