Mandoline Slicer for onion and sweet potatoes

[antimatter]

Do you have any recommendations? There are several makes on the market and it is hard to know which one to choose.
I don't mind paying a bit more if I can get a utensil which will last (stays sharp) and is sturdy.

I got rid of mine after badly cutting my finger. I use the Magimix blade instead.

I've had a few duds, but the oxo one is doing well so far

Oxo here too.