For what it's worth,
I'm running a Russel Finnex L.S.S, I wouldn't be able to run the volume that I am without it. I had a couple issues in the very beginning with screens tearing, But these guys were great to work with and had my problem sorted out pretty quick. I'm running 15,000 gallons a week through it with zero issues. I'd recommend it to anyone.
If anyone would like to come out and see it run, I'd be happy to have you in Fridgid ass Wisconsin.
Nik