CRN Or DLC coating is now used on Titanium valves & will help them last on street duty

Powdered metal seats, {Durabond Killer B for example) are more common, at least more machinist friendly than beryllium copper/bronze. It's all just money but for most people, the Ferrea hollow stem valves are better return on the dollar. Unless you have the heads and are willing to cam to support the high rpm, I would think that taking the titanium valve money and spending it on more cubic inches makes more sense, especially in a mopar situation. S/F...Ken M

With lighter valves, any given cam could be used with less spring pressure, better for engine longevity.
Lighter valves doesn't by itself mean you HAVE to rev the motor higher.

British bikes used aluminum rods 70 years ago. Honda 750 got 70,000 street miles.
Limited RPM is the key.

Correct you are sir! DLC is tougher than CrN however CrN can be reworked whereas DLC requires recoating from the base material. Either coating can be run with a standard seat and both create a very durable valve job.

For a BBC 2.250 +.100 long intake the difference is between steel and Ti is about 50g i.e. 144 vs 92g

Ti valves are more forgiving due to the coatings. Either will require a moly stem coating.

+.300 tip are typically steel insery and .250 use lash caps in many apps so be cautious of that spec.

The Xceldyne rep told be the BeCu seats (and moldstar 90, etc) were employed for heat dissipation more than anything. He also advised me to avoid working with the material without a respirator.