Valves 11/32" Stems, Big Block Heads

The last set of valves we put in my stealth heads came from REV

https://revvalves.com/
is there any reason not to use a set of Stealth heads? Redoing the 452's seems like stepping over a dollar to pick up a dime. A max ported set of 452's won't outflow a set of OOTB stealths. Even if someone made a set flow that good before long they would likely develop cracks.