These are all I use, after using Shimano and SRAM which don't last nearly as well.
CSM-990, 11-40T or 11-42t and work well with older derailleurs with a B-screw modification or goatlink. I use them on 2x setups but work just as well on single ring drivetrains.
$69ea. Half the cost of the bigger names, just better quality and longevity
I also have s good condition used one. $39
I-10 and Chandler Blvd
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