The modern razors are just as nice and do just a good a job. It really depends on your prep and technique. For build quality, i would have to say the vintages were better made with the exception of most of the stainless steel moderns.
I currently use a vintage Gillette which I believe is a ball end Tech. Anyway, I just wonder how well the new Edwin Jagger DE89 or the Merkur (can't remember the model) compare to an older razor like the Gillette. I like using the old razor, its just ugly and tarnished.