I just put a RemoraPro on my 72gal reef and I'm not all that impressed. Its ok, and, as far as hangons go, I don't think there is one rated better. You could always put 2 on if you need to.
I have my RPro and old prizm on my tank.
geez guys thanks alot. Just cause of your stinken thoughtful input I am actually going to have to do some work and make an in sump skimmer fit in my sump.
hehe
thanks
you saved me money
;-)