I echo Ganef's comments completely. Assess your needs and determine your requirements from there.
I carry 8 magazines, a dump pouch, a radio, and a utility pouch to store my reloading tools, death rag, extra battery, etc. There is no room for anything else on my rig because that is exactly what I want to carry.
Its all about what works for you the best. Find something that combines what you think is cool and what fits your needs and you can't go wrong.
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My personal take on Crossdraw vests - I dislike the crossdraw, because of the amount of room the holster takes up on the vest. There are vests with six rifle magazine pouches (mirroring the other side) that will hold 12 M4 (6 AK) magazines. I prefer these vests, as you can still hold a pistol in one of the rifle magazine pouches. So instead of 6 mags and a pistol, you can hold 10 mags and a pistol. It can still be crossdraw, too.