Personally I recommend plate carrier as many above have noted. The fact that you're stuck with static pouches with some tactical vests isn't always a good thing. Some tactical vests can come bare and you can add your own pouches, but I still recommend a plate carrier.
One to recommend in specific would be the TAG / Shellback Tactical Banshee Rifle Plate Carrier (http://shellbacktactical.com/banshee...tecarrier.aspx
I just picked up this plate carrier about a month ago and absolutely love it. It weighs only 2lbs 5oz and is super light. It's got the optional cummerbund which allows you to run a slick kit if you choose or to use it and mount all your pouches onto it. It rides nice and high up and I run a primary kit on my waist.
The PC is a decent price for the quality and I would recommend this PC for either a beginner or vet.