My side by side comparison of fans at a West Marine had the Marinco style fan as winner of the airflow contest. But experience on my and many commercial boats has shown they are noisier, draw a bit more and the collation mechanism seems to go long before the motor and gets really funky unless disconnected.
The next best for air flow was the open bladed Caframo. $40 on Amazon, 2 speed, cheap replaceable blades and quiet enough (have 3 on right now in my saloon and no need to adjust TV volume.)
I am sure there ae better fans out there, but they did seem to cost a bit more for less performance in my opinion...but I will have to wait and see about the longevity of my NE Caframos.
Oscillating is OK...but on both my ac fans and space heaters...I find I usually don't use oscillation, so it wasn't something important to me....if it were, then the Hellas might have been the ticket.