I would go with the oil pressure gauge. IMO, i would rather be informed about pressure instead of temp. I think you can guesstimate engine temps by going off of an EGT. Not totally sure though. My experiences have taught me that a drop in oil pressure is more serious than a spike in oil temp.
BTW, what is the website addy for those gauges. Never heard of those. I am currently looking for some trick ones. I would have gone with Blitz carbon backs, but those seem to be only in mechanical versions.
