I typically use and like the AEM 30-0300 X-Series Wideband. They are only like .500 deep so they could really be flush mounted if space is at a premium. You can find them online for under $200 shipped. They can be wired to data-log if necessary.
AEM for me.
I avoid Innovate's stuff as I bought a MTX-L and it act strange. Innovate support said O2 sensor was at a bad location and it was fouled. Bought a new O2, same issue on day one. Bought an AEM to replace the entire thing, zero issue since then, which was 7+ years ago.
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