Rhoads lifters....

I used them on a (overly) stout MP oval track cam. They worked really well.
I have used them in the past on a single pattern cam, intake only. The faux and temporary split cam helps reduce the RPM band on a cam that otherwise was a bit bid for the stall converter.

They are a bit loud, however the price is small. (Noise)
The best reaction I have with the Rhodes lifters is when the pushrods depress the lifter a little, not a lot. Best and last time the lifter was depressed approx .015.
It did not make it any louder.