I almost went a size down based on the board, but at the last minute decided to go with my regular size, XL.
Australia away (Nike) - overall the jersey feels cheap. More like a training top. Not in a knock-off way, just that Australia has some cheap ass kits. I'm 6'4", 230 lbs., 45-46" chest, and the XL is probably the best fit I'm going to get. A little snug around the chest and shoulders, but not a bother. Length is fine. 2X would've been too big.
Argentina away (Adidas) - amazing. XL is a great fit, and the quality of this one is top notch.
Liverpool home - nearly perfect. XL is perfect, quality is great -- except that I washed it right away to get the smell out (the smell that my wife described as a combination of parmesan cheese and ass), and the cheap badge (only looks cheap inside the kit) seemed to shrink a little bit and was tugging at the jersey, if that makes sense. I bent it a little bit, and kinda massaged it out, and it looked fine. I don't know if it'll do this with every wash, but not a big deal, or noticeable to anyone but me.
Overall I'm ecstatic with the purchases, and will use the site again. Delivery to Oceanside, California took 7 business days.