Performance wise, there is no difference. It's a reliability over time issue. The caveat being, if you use aluminum on the street, be prepared to replace them every year or two. There is a lot of stress on these things, particularly with roller cams. Even the steel ones need rebuilding periodically. Another tip I picked up was putting an
oil retentive coating on valvesprings, particularly when using roller cams. These springs get hot, and heat weakens them over time. Same coating used on piston skirts. Makes 'em run cooler, and last longer. Sent the springs to Airborne Coatings. We'll see if they ever need replacing.
Lunati? No, I can't say I've had the honor. Have always used Crane, and most recently Comp Cams. Pushrods in their roller kit were too short for TFS heads. They swapped them out OK, and advised next time custom order the kit. Different heads need different length pushrods. Some other guys I know have used Crower with good results. Have used Rhoads variable duration lifters, and they work too. Ought to call them and see if they're making hydraulic rollers now. They bleed down at low RPM, and raise the idle vacuum. Pump up at around 3000 and give full duration. Cure for guys running 234/244 cams and not enough vacuum to operate the power brakes.
Woof! You anywhere near Morehead City? Gotta go down there next month.