I'm not familiar with Ten Ring ammo.
Keep in mind that Outdoor Limited is also going to whack you for sales tax since they're in NC. SG Ammo will not. If you're getting 10 boxes, Outdoor Limited will be a little less, but you're getting an unknown with the brand.
If getting a case, SG is clearly the better deal since you can get a case of Blazer Brass or S&B at a price per box that is less and you're getting a known brand ammo. I've used both in my P220 and CZ97 and both function perfectly but the S&B seems to be a touch more accurate...for me. Additionally, you're also getting new brass cased ammo with BB or S&B if you're leery of the aluminum cased stuff.
Shipping costs from both are very similar as well.