I will never buy another Rowenta after the shoddy, rude service experience I had with the last one. I don't know anything about Oliso. My current iron is a Reliable Digital Velocity V100 - terrible name, but it produces the best steam of any iron I've ever owned, and it's made so that it can't leak. You can also put it in a mode so that it doesn't automatically shut itself off. I really like it.