I know that the market of armour is a lot better today than 4 years ago. I was just saying that despite that, if your don't research you can still make bad decisions even here.
As for you, 38" waist is a little abstract for me since I'm not used to imperial measures despite all my time here. But I would recommend asking someone who either has RT or the new NE to measure the inner distance, end-to-end of their ab and kidney pieces. If those add up to 38" then you're set. And at least from RT, you might be able to but loose pieces and not have to replace your whole kit.