Best hydraulic flat tappet lifter?

We replaced 2 of the Crane hydraulic flat lifters that they supplied at just under 1000 miles. 1 was really shot; it would not hold oil and you could clearly hear the miss on one side of the exhaust. The 2nd was suspiciously soft when the engine was not running. They did not hesitate to send new ones. I don't know where they source their lifters these days.

Edit to add: These were bought in 2016.