the truth/opinions about cams

I've seen reported elsewhere that fast lobes are actually less hard on the valve train, contrary to what some think.

The faster ramps actually help lighten spring load over the nose and improve the ability for the lobe to spin the lifter and prevent failure. Better accuracy in grinding with modern machines has also been a boon to modern hot rodder.

**** quality lifters are probably responsible for most noisy hydraulic setups, but good lifters seem to be a myth anymore.

What OP doesn't seem to understand is that any cam with the same @.050 and same lift is going to have similar seat to seat. Some may be shorter and make a few HP difference, but the thing is, you CAN'T get them close enough unless the rates are close. Unless it's a lift limiting lobe (duration style) then max lift is tied to the duration and the opening rate. In reality the old school grinds are going to not only be lazy, but also lack lift. It's not JUST about rate. Everything works together and are not separable. So if two cams are close, then they're close.. A modern cam with fast ramps and the same lift as an old school stick with have far more "under the curve" and has been alluded to by others, that's basically free power. 15-20hp is no joke. If a hot rodder is willing to leave 15 free hp on the table is a poser, not a hot rodder.

Modern lobes are better, all the way around, and in many cases don't cost extra. Why anyone would advocate for going with "good enough, but not good" is confusing.