Big block hydraulic roller lifters, which ones or whats your opinion on Comps ?

Built a stroker sb Ford for a gentleman and used Comp hydraulic roller lifters. Couldn't get oil flow from a pair of rollers to the rocker arms. So I called Comp and they immediately sent me another pair of rollers no questions asked. Still no oil flow. So I installed the oil galley plug I had left out and both pairs of roller lifters worked perfectly.

I've had excellent service and reliability from Comp Cams and their products.