By hacks I mean any pokemon not gotten through legitmate means. I don't know about other people, but I work hard breeding my pokemon to get good IV'd pokemon. I think it just kind of detracts from the fun to use "perfect" pokemon with things like all 31 IVs. It was kind of obvious they were sav'd by that shiny, nicknamed Jirachi. It's not that I'd never be up for a challenge by taking on legal sav'd pokemon, I just think you should at least tell people that you sav'd them if you are challeging them to a battle.