the repro fenders for the TF series are as good as the originals, and of course subject to the same rust issues - fiberglas is where you'll find thrown rocks will result in star cracks on the surface, although they don't rust - either are better well undercoated .... I think there's only one maker of the fenders regardless of the vendor, so look for price, from MO your best choice is probably Jim Carter, closest and lots of happy customers here on the forum
Bill