Faria did warranty guage repairs on a boat that I am the 4th or 5th owner of in the last couple of years. The guages are in a 1992 or 1993 boat...hard to beat.
Faria is good. VDO makes a good gauge (double lensed to prevent fogging up) and Livorsi is used in some ultra high end custom applications. Like anything else though... you pay for quality.