who to trust for hydraulic flat lifters these days?

new, i've had good luck with melling lifters, just the cheap ones from summit.

otherwise, i'll send out the old stuff and have it refaced.

just make sure to take apart and inspect/clean thoroughly and of course all the assembly lube/paste, break in additive, good oil, etx
That's exactly what I replaced the high end Crower cam saver lifters in my Ford 400 with and they have been great. ZERO noise and they broke in fine. $4.99 each. Camsavers were over 200 shipped. Sounded like solid lifters when hot. Pissed me OFF.