Uhm, which type of Shure exactly - and for which type of turntable/tonearm?
Generally speaking, the Pickering XV-15/Stanton 68x family was a pretty good MI design, but as usual, actual quality level depends most on the quality level of the needle (talking about the whole needle design here, i.e. including cantilever quality et cetera). However, just like with many other nice cartridges of the past, the higher quality original needle variants for these Pickering/Stanton carts have also become either completely unobtanium or pretty rare and comparatively expensive in the meantime. And unfortunately there aren't so many sources for better than just average, entry-level replacement needles - and even then these are likely to not quite provide the same sound.
So a bit more input from your side would be required, if you'd like better advice for your case...
Greetings from Munich!
Manfred / lini