who to trust for hydraulic flat lifters these days?

I called Schneider cams recently. They used to resurface lifters, but don't anymore. According to the gentleman I talked to from Schneider, hylift johnson lifters are pretty good and shouldn't require any type of surface correction.
Here's what I wanna know. When lifters are refaced, WHAT is done with the plunger, spring and check valve? Just having an OLD lifter with a fresh ground face for 100 plus bucks? No thanks.