Campden tablets are pretty cheap. Don't know what you're paying for your store bought water but for me it's a lot cheaper to use the campden where I can.Probably too much compared to using the tablets. Usually adds about $10 or so to my cost. I've been using store bought mostly during last minute brew sessions(which seems to be all I get to do anymore) and its faster to buy a batch worth of water than it is to filter it.
people still like the beers i have brewed but i can't stand that underlying medicinal taste.Yeah, I gave one of the batches away for my daughters Bday. It was a cream ale geared for my BMC friends and everybody liked it. Most didnt notice the phenol taste, but for me, it stood out.