[SentraSE-R]

I own both. The UG wins hands down for value, ergonomics, ease of visibility, and everything else, for the vast majority of users. The only people who can get an advantage with the SG are those who want a specific function that's not supported by the UG, like transmission fluid temperature or HV hybrid battery pack voltage, and only if the SG can be programmed to display it, and the user is willing to program it into an xgauge. There is no accuracy difference between the two.

The UG is a far better value for the average user. You can display 18 gauges with the UG with two button pushes (or none, if you want to let them cycle automatically). It can take you 20 button pushes to display 5 gauges with the SG, and well over 100 button pushes to display 8 gauges with the SG.

The UG will recognize all the available gauges for your Fit and be operating in less than a minute. The SG will require hours of tedious programming to be fully functional using its maximum capability.

The UG display is much more modern. The SG costs $140-$160. The UG costs $60. I would buy the UG for myself and recommend it for most users. I only keep my SG because I expect to buy a Prius some day. Otherwise, I'd sell it, buy an UG, and keep the change.