I know lots of people that use them. I would say that BRS is in the category of best quality for their asking price but there are better products out there that can handle much bigger setups. I use a NextReef MR-1 Monster. It holds 2 gallons of water altogether and will be used on my big tank I'll install when I move to my next place in Carolina or Florida.
on my 110 i use the nexreef mr1 shorty with rox 0.8 carbon and tlf 150 for gfo. the nextreef has better and more even flow than the brs will ever dream of.