uprated driveshafts/cv joints?

is there anywhere that does an uprated cv joint or driveshaft for my car, i bust my first one through abit of stupidity, and then finding a replacement is so difficult, it seems like nothing matches up anywhere! grrr

i was wondering if anyone does uprated ones, as once i find one, i want it to last a lot longer haha

anyone got any ideas?

thanks, luke