All positive experiences has been my finding on the SEI drives during my research of them to replace both my Alphas. Even the marinas have said they are good with no issues as far as reliabilty. Only downside is the paint process is no where near the Merc process. A slip neighbor of mine put one on last spring on his cruiser. When it was hauled out in the fall, I couldn't tell which was the new drive do to the paint not sealing the AL housing and it corroding. Do to that issue alone, I decided on new Merc drives. Took some serious debating which route to go.