Hughes STL5460AS-8 vs Lunati 40200913LUN cam

So....

If it was me, given all the commonplace failure I've seen with flat tappets. And given the choice between a flat tappet or a roller. I'd pick the roller. I don't understand how there's even a consideration.

In the topic of custom vs. off the shelf. Seriously guys, what's the difference. Be practical. Given similar duration numbers, off the shelf vs. custom. What power difference are we talking for a serious build? 10hp? 20hp? I'd say 10hp difference on a 550+ hp engine is negligible.