I've been using Marinepure blocks for almost 2 years now with excellent nitrate control. After being dissatisfied with bio pellets, I strarted an algae scrubber a couple of months ago to control the hair and turf types, and so far seen very promising results. My Bubble Magus protein skimmer continues to keep going and going, although the proponents of algae scrubbers say I'll eventually be able to do remove it from my system.
I've also had 2 reef octopus RODC pumps for a while (older version of their Varios line) and they've been very reliable, quiet, and easy to clean. As I am frequently out of town on business, I use two for redundancy and piece of mind.
Flow control-wise, my two Maxpect 250 gyres have been great. They do require careful breakdown and reassembly to maintain, as it is VERY easy to cause damage and/or put them back together incorrectly. I believe that is the biggest reason why some complain they are noisy. For myself, I'm very pleased with the pumps and the ability to customize my flow.
