Prostar heads valve seal question

You get a couple notions...from various builders... one is that the one on the left 'manley' looks like, is more a short term race seal that isn't super tight around the stem ,will control the oil but for how long...
The other ,thicker, tighter with more 'area' will control the oil for longer life.

Like a drag motor, refreshed every sum odd races or every season vs a service truck for the city going 200k. I remember speaking with different builders in the late 90's...and, well... I thought that might be bs. I mean..'expensive fancy brand name , gotta last right.. ' ? Nope.
The one seal I replaced with a Manley viton seal vs a thick black viton...the back of the valve was all gunked up more than the others. More oil was going down the stem/guide than the others... too much and incoming fuel air wont get as much off and it just builds like frosting on a cake.
Fact is..You'll always have 'some'...you have to have oil in the guide or it will overheat ,hog itself and or seize...but extra oil here isnt what you want.. if it doesnt have a bearing, it doesn't need more oil.
Point is...use the one on the right or go get the black viton seals from a local builder/machine shop...other thing is if they is ANY warranty...you'll void it by changing parts.