I don't have any personal experience with owning a boat that had ETEC motors on them but I do have some experience outside of that. First would be a buddy's boat that has twin ETEC's on it, which they're definitely a bit noisier and smell worse than my Yamaha F225. The other "experience" that I have with an ETEC is when I went out shrimping a few years ago in my old boat. There was a guy who had a Grady White with an ETEC on it that dropped his pots next to ours and then would drive off, check others, come back and so forth. My buddy and I were in my boat and we'd just basically chill where we dropped our pots or a drift a bit and then check them after a little while. You could hear and smell the guy with the GW and the ETEC on it from quite a good distance, and then when he pulled up a hundred to two hundred feet away, you could see and smell the smoke coming out of the ETEC, as well as hear it too. At the time, I had a 21' Arima with a Honda 130 hp 4 stroke on it, of which it was quiet and didn't smoke at all. Sometimes if I left the motor on and in neutral, I'd accidentally restart it because it sounded like the motor shut off. With the issues that the ETEC's have had over the years as well as them going out of business, not being worked on by other mechanics or shops, and just the sheer amount of different 4 stroke models out there... I'd honestly just pass on getting one. Unless you can get the boat for a steal of a deal, and/or then wanted to repower or something. They do have considerably more torque than the typical 4 stroke, but I honestly don't care about that, and I believe they still need the oil reservoirs to be filled with oil all the time. Modern 4 stroke motors imo are here to stay, unless they figure out something with maybe diesel outboards, hybrid power or even possibly electric powered outboards. I think there's a big reason why Evinrude was the last to have 2 strokes and then they stopped continuing making them. Again, these are just my opinions and are mostly from the outside looking in. As mentioned, I'm guessing looking on a different forum and/or a Google search is going to be a bit more productive as opposed to relying strictly on information from ETEC owners on GG, as I imagine there probably aren't a ton of them.