How about these cams ??

I'm running a Lunati solid roller .640/.640 with MRL lifters and can't really say I can hear my valvetrain more than any other engine I've had. It's a non-issue. My lash is .013. Tight.

There is substantial power gain with solid over hydraulic. How much I couldn't tell ya. Some of the more knowledgeable guys here might know how much, but it IS substantial.

As far as durability? Solid wins out every time. It ain't rocket science figuring that out!

Seems like every guy I've known that runs hydraulics is either afraid to, or just doesn't know how to adjust valves. Certainly not pigeon-holing anyone, but it's been MY experience over a lot of years.