Kudos to the Ignitech from my side.
Been running for almost two years now on a homebuilt, zero issues. Recommended for two other planes - works like a charm.
Ignitech really recommending to have their modules installed outside engine compartment, and even advise to do the same with Rotax (where they fail).
Depending on your national regulation, I guess it is worth to have them as a "spare".If your OEM module breaks down - you don't need to wait for a month.