Not all fast ramps are noisey. Harold Brookshire prided himself with his designs.(Ultradyne, Bullet and Lunati VooDoo series). That said there are others besides Comp that dont seem to have noise issues. (Though IMO I think some batches of Comp hyd lifters may be more at fault than their lobe designs for being noisey)
Solid lifters can run fairly quiet too and need not be "tight lash" designs. A well designed lash ramp takes the lash up gently. (one of a few reasons I personally wouldnt run solid rollers on a hydraulic roller cam).
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