I have studied. I know quite a few like the Glowshift:
GlowShift | Tinted 7 Color Oil Pressure Gauge with Electronic Pressure Sensor

BUt Im a sucker for good looks and digital. Any experience with this one? I REALLY would like to have a gauge with low warning or some type of low indicator. Notice the green, yellow, and red arc. I have written the company to see if it is programmable. IE, can I program what PSI should be in the red? Anyone know or have experience with this gauge?
Digital Oil Pressure Gauge ProSport Blue LCD Display | eBay

I know there was another used on this forum that flashes as an indicator. Price was high iirc.

 

If price is no object, then you simply must get the one from S P A Design. SPA Oil Gauges
Made in UK, digital read out that nearly (or perhaps exactly) matches stock dash.
I'm saving money until I can afford one to keep Minister Of Finance happy.

 

No need to get fancy. A simple analog gauge is the easiest to read and monitor. Clock it so normal is at 12 and you don't even need to read it to know you're ok.

 

If you are going to use a sandwich plate for a connection, you might also consider installing an oil temp gauge also which is a more accurate means of watching the engine temp.

 

I was planning to tap it into the spare part, as shown in the DIY section. But oil temp would be great to have.

 

I run a glowshift temp and oil pressure gauge and I kind of hate that I went the electric route. After only 6 months my sender has already gone out for the oil pressure gauge, so now it reads whatever it feels like when it actually wants to try and work. Don't go cheap quality like glowshift. They're sandwich plate is one thing but the gauges are junk.