Awesome Audit30 - that's why I'm saying for Shioner 817H you should get your size. I am normally 28s but for some reason when its 30L i find it very tight to squeeze in. so I've been buying Shioners in 29x30 and they all fit perfect for me. 28x32 is awesome too but I have to hem. 28x30 i cannot squeeze in.
so for this particular pair, stick to your normal size, do not size up.