I typically utilize good quality electric gauges & sending units. I don't have any technical argument either way and I'm indifferent on the subject as stated by Flemming. I will say that the electric gauges are easier to install due to ease of routing the wires. My 'go to' brand of gauges has always been the VDO gauges. In the past said gauges were manufactured in Germany to top notch quality standards. I'm not sure if this is still the case these days and I'm sure that someone will chime in. Btw, the VDO gauges in my Regal have been installed and working since the eighties..