Lots folks with coral end up having to dose nitrates – don't believe everything you read about keeping a tank at zero nitrates/zero phosphates with coral! INCORRECT. :) ;) :) You do have to watch out for overstocking and overfeeding, but that's done by stocking the tank slowly and by keeping stock levels low. Aside from runaway nutrient situations, most tanks do fine – "better" in fact – with some dissolved nutrients in the water. (Our tanks tend to be relatively very poor in plankton, so higher than natural seawater levels of nutrients probably helps to balance that out a little.)
I'd use a Brute only because they're of known toughness...I'm not sure I've ever heard of one breaking.
I wouldn't risk it on something cheaper.
Plus from the money angle, it's only $30 for the life of your reef. My Brute is at least 15 years old. That's only $0.006 (thousandths) a day! $2 a year!! Don't be too cheap! ;)