I built my 7200 2 winters ago  with shoup parts;  Double disk fert openers,  a couple of  arms for those disk openers,  all new  no-till coulters  and bearings,  and lastly,  the  trailing closing wheel arms.  

Can't seem to see any  adverse wear after only  2 seasons,  so I can't really give an honest  answer.   Everything looks to be going around, and up and down as  reqd.  

But  reading  several  recent posts about their parts pretty much centers around the  cheaper bearing being  used.    I  don't believe they are the only guilty vendor..  so  check  what others may be offering.  

I think money saved is  about offset by  a little shorter  service life.   So if you are thinking about   trading planter in a  year or two,   aftermarket may be the way to go.   Keeping it  for a longer time?   might be better off to  go full name brand.