I got a set of the Herbert TDV lifters new in box if anyone wants them, picked them up in a package deal, how I like to buy stuff
Yes i belive they are Morels as well. Low idle issues are common on all roller lifters and all makes. They can actually "stall" when at low rpms. But some guys love to idle to 900rpm for some reason.
As for lifters depends on the application. If you want the best then buy a keyway Jesel, but they too can fail
But most folks don't need a $2800 set of lifters and the accompanying $1200 set of bushings needed. I have run the comp solid body ones in the past with not a lot of issues, but in milder engines. The Isky Red Zones, Crower Hipppo, BAM, Crane stuff is all very nice and will work fine for 99.9% of whats done on this board.