the mpl ones are good value for money in terms of quality etc but they dont have the little cush drive supports, which for me are essential, if you have ever had a cush drive start backing out and eating up your hub like i have you will know its nasty, swarf evrywhere!!
so get one with these is my advice.
the renthal ones are good but i dont believe that they have the phosper bronze bush in the middle, not sure if you need it mind? but i guess its to deter corrosion
i have some sprocket carriers that feature the cush supports and the phosper bronze bush. if you want one u2u / pm me for details
Threaded Mode