if you dont want to spend a boatload. mishimoto is a good bang for the buck aluminum rad. rmp has good price too iirc.
as with anything it too can fail...some have on folks. anything can fail, though the old plastic rads are way more prone to failure thees days. they are old...
there are other more expensive/baller brands like zionsville but $$$$$
if you are looking for an oem replacement the s54 rad from the m coupe is a drop in with bigger capacity. still constructed like the oem rad you have now but its new plastics of course.