Chad,
A good Evinrude dealer should be able to answer questions about a specific year and model as David suggested. I have a 2005 Etec 50 on a pontoon and it has been absolutely perfect. Quiet, sips fuel and oil, has always started instantly and I have never had to restart it, ever. It even winterizes itself.
My cousin has a newer 115 Etec on a pontoon, maybe 2017? It has been perfectly reliable but doesn't have many hours on it. I believe that a dealer can hook up a scan tool and get a readout of how many hours and at what rpm the engine has run.