I upgraded my panel and removed the G1 Insight Eng Monitor. It is the Monochrome Amber screen. No flickering or burnt out bars. I have all 4 sets of the EGT and CHT probes for Lycoming (IO-320). It worked great for the time I used it. The new G1 colored monitors are $1500. Price is $700
Below is a Youtube video of the G1, Amber colored, being sold and its operation. Go to 13:44 on the video
An engine monitor is so important. It can save you $1000's in costly repairs.