Roller Rockers 1.5 vs 1.6

DentalDart said

I want the 1.6s with the steel hold downs, but they are not in stock right now... maybe they will be in the next week or 2. I'm in no rush, just need something to tinker with on the car. Everything else I want to do costs to much money.

I have seen that these rockers are essentially the same exact ones as the PRW which is why I will buy these instead of PRW, at 1/2 the price. Plus I have a friend who has the SM on multiple motors and they have been good to him.

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Watch the DV video on high lift rockers, Ep 17 and Ep 18. The effective ratio changes as lift progresses. One rocker could have 1.4:1 off the seat and 1.7:1 over the nose. Another could be the other way around. Quick off the seat aids low lift flow with the high ratio coming off the seat. Then if the ratio reduces as max lift is approached, this slows the valve preventing float.
There is a lot more to rockers than meets the eye. Miller made rockers and wrote about mid-lift. Research is required.