I use only Johnson lifters FWIW, I get them from Dave and Bison. I have several sets of used Morels and comps laying around. I am no expert but I stay with what works. I usually run about 150 on the seat and 400+ open for pressures, .030 preload max. I've spent a lot of time talking to both Bison and Dave and they have taught me bunches about valvetrain stuff. Like I said I will stay with what has worked for me and my customers.