C.C.
I'm not familiar with the water quality where you live, but unless you're on well water with some serious contaminants, carbon filtration is probably fine for your needs. Likewise, the brand doesn't matter too much, but you should be sure to change your filter every few months (otherwise you'll just be drinking moldy water... yum!). My only caution with Reverse Osmosis is that it wastes a ton of water - the wasted amount is more than the amount you actually get out of it. So if you're on a water meter, that's something to consider.