I got Skimz SM201 on my 120 gal. and I am very satisfied. It's been running for 2 months now and it is pulling tons of skimmate.The ES5000 pump is very quiet,silent almost.It was very important to me to be silent, since my tank is in the living room and I don't want any noise coming from it.Very easy to adjust,no micro bubbles coming out at all. This is after 3 days.
I Highly recommend this skimmer to anyone.