People around here seem to be all about boutique pick ups. I have some but I don't notice them being any better than Duncans or Dimarzios, just another flavor. Tha being said, I am not sure what an H-574 is. Is it similar to an H-575? I have an H-576 which is simialr to the 575 so I think my recommendation would be in the ballpark, especially for jazz playing. ANy of the Dimarzio PAFs sound great int that style guitar. I settled for his 36th Anniversary PAFs but I also liked his 59 or 57 PAFs. All low output and really smooth. The Duncan Seth Lovers also work well in there....basically any well built Vintage style PAF clone should do well. Again, I tried the snob jazz pickups (price was no object at the time) and liked them a lot but,I like the Duncan and Dimarzios a lot too and they are a lot cheaper. There is that congnitive dissonance thing going on a lot: I paid more for these pick ups so they must sound better. I did a shoot out with a dimarzio and a Jim Wagner Filmore. They tested out as similar on paper and I could not tell the difference sonically. But there was a $225 price difference. Of course my ears have paid a price of years playing guitar so I may be wrong here. And around here, a lot of people like the stock Schallers for jazz. but I really don't.