Kinda like do I want a hot wife that tolerates me or an ok one that loves me?

I go for performance first but don't like buying engines or not starting up in my 1 minute on the line. If I don't have an acceptable balance I look for one.

To quantify this...glow plugs. It has been noted by many racers that Merlin plugs give a little extra oomph, so I buy some. After having three of them fail on the line, I have gone back to the reliable No 8.