I vote for the Innovate. I have the MTX-L in my exhaust pipes on. My exhaust is dry but I installed the O2 bungs about 2 inches behind the turbos on the O2 heat sinks Innovate sells. I have the gauges mounted on a pod on the dashboard and even in bright sunlight I can see the numbers. The only problem I had so far was I wiped out one O2 I think from water getting up the pipe. The O2 would not recalibrate. I just use my O2 for reference because my engines are still carburated. I like the fail safe function.

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Check out fjo electronics . I have had them on 2 different boats with no issues .a little pricey but you get what you pay for.

I have the AEM gauge and even with dark sunglasses in bright sunlight you can see the guage OK...... I do haves a problem with the guage getting moisture inside the lens on occasion but other than that it works fine......