Mayflower UW Gen4 Chestrig!!!!! mayflower all the way!! one of my favourite Brands for chestrigs. they do some in at a price of 200 though. other than that you could go with the other cheaper brands other people have suggested.
Could try Blue Force Gear ones, HSGI or Haley D3 Chest Rig
VFC HK416 Custom
Custom Bowie Tactical x SAI Glock 17 (TM Base),
Custom SAI BLU Glock Build (Timberwolf Base)
Custom Zev Noveske Shooting Team Glock 34
Custom Zev Dragonfly G17 (Project) (In progress)