Both are similar cases to my eyes, its whether you are prepared to pay the extra for the looks in my opinion
if you're investing that kind of cash into a case chances are you're not scared of modding it to get the results you want, plus the $100 saving could buy an extra rad hehe
Problem is.... they also look really similar! lol ... $100 is a lot of money, and really, even if I have the budget, which is a stretch by now, doesn't mean I should be wasteful on my spending.
As long as there is no huge quality issues, I think I would go for the 810 for its price. Plus I don't need to mod it to fit the rads, at least that is from what I researched so far.