What gauges do you actually look at?

I watch temp, voltage and oil psi. Have separate aftermarket gauges for them. Had a alternator take a crap and was able to limp home. Also had the oil pressure line break right after starting and was able to shut it off before damage ( pure luck) probably need to add a trans gauge.
I run the Holley sniper and with the display you can set ranges on what you want monitored. The display is small and hard to watch when you’re getting on it but it will flash yellow as you get close to the min or max mark then red at the min or max that you set. Kind of a high tech idiot light.