I like the main theme of the OP here, that a mid-fi AT cartridge can best a potentially over-priced cart.
But in this case, I have to push back against several invidious comparisons or troll-like slanders on Grado that sprouted here--
that a) they haven't known what they are about since 1985, that b) they put "moon rocks" on styli, or that
c) they are so obsessed with headphones that cartridges are a sloppy afterthought.
All baloney: and I testify here as a longtime fan of both Audio Technica (the 440, 540, 740, and black-shelled shibata MM variants)
and Grado's Red and Silver, e.g., which are similar carts to the AT 540 VM line, and which are preferable to ATs on some systems/ speakers.
Grado cares about craft; they have great, intelligent customer service. I have experienced no hokum in their dealings with me, and they have an excellent cost/ result ratio. Their Red, esp., is a prize in mid-fi and is precisely one of those solid bargains that makes one
dubious of the real room for sonic improvement given adjective-heavy, sky-kissing rhapsodies about moving coil or otherwise high dollah styli.