Thanks guys, will check these out.
So it looks like two good options are:
SRAM - 12-32t
https://www.sram.com/en/sram/models/cs-pg-730-a1
Shimano - 11-28t
https://bike.shimano.com/en-EU/product/component/shimano/CS-HG41-7.html
Hello from a new member - currently in the process of rebuilding a 1991 Beara hardtail custom racing (hand built cro-mo, made in Ireland) frameset with M730/732 XT components.
Just wondering, seeing as it's generally accepted as good practice to replace the sprocket cassette along with a new...