My vote would be MDT too. I've got an LSS chassis for my Remington 700 SPS tactical in .308. It was definitely a huge upgrade over stock. I'm not going to say anything bad about the AI or Cadex as I haven't tried or used their chassis' but for myself I couldn't justify spending 2-3 times as much for a product that I didn't think was going to be 2-3 times better. Personally speaking if I EVER get a Cadex product it won't be a chassis that may or may not be worth the price...it'll be a Patriot in .338