I had an EV-180 it was a great skimmer, but you have to run a bigger (preferrably a pressure rated pump) pump than the reccomended MAG7 to get anything out of it.
I started with a mag 7 then ran a Mag 9.5 and it was better, but when I upgraded to a Pan world 150PS that I teed off for the skimmer and the return the performance increased greatly.
The thing I liked most was how quiet it was.