the only differnce between oversize and normal is the oversize tend to be stiffer but they are also 30 grams heavier. i run the normal deity bars and the hold up fine. and the black market bars are heavier then the deitys. also deity has some new bars coming out soon that are a little bit lighter
my 25.4 deitys are lookin sick, i have them in grey, but they're lower profile than the 31.8s and look a little better in my opinion. the 25.4 stem is really what shines though, but both products have been excellent for me.