I'm not speaking only of the bending technique
The quality of the finish (at least on the newer Greddy systems; I have the EVO) is top notch.
It looks thicker and has a beautiful textured ceramic coating which appears as if it will NEVER rust or rot.
I cannot say the same for "home made" mandrel bent piping which usually lasts only a few months before it looks gross
Anyone who has the EVO system can back me up I'm sure...
Again.. I cant speak for the MX piping for the P10 as I have never seen it first hand..
I wish this picture was more close up (please note the P11 system is only 2 pieces not 3)