I also run Victory Titanium Valves, but only on Intakes, exhausts are in ones, Victory quality is exceptional, but price can hit your wallet .

I have Berryilium valve seats, as material suits Titanium & also Berryliuum also helps dissipate heat, which helps my turbo application.

Titanium does not cool off as quickly as Stainless, so weight saving is a partial trade off to running hotter valves