Beyblade customizing elements to consider

I was just wondering, besides stats, what else do you have to keep in mind and consider when customizing?
Shouuld have ask in aska question get a anwere but well there is Your Opinion otheer opinon What pieces are on what your launch style your launch Perfromance due to test
You should not even say "besides stats" : never even consider statistics, those mean nothing most of the time.