CarlDPI is a gimmick. Gaming mice in general are gimmicks, unless you find one that really fits your style.
Basically if you spend more than $30 on a mouse you are a fool, because the technology is the same behind all of them, you are just spending money on ergonomic design and name brands.
actually if you spend 30$ on a mouse you are a fool because either you don't give a shit and get one for 5$ or you get a used WMO or intellimouse or it costs moer than 30$.
So you are wrong.