Well, I spent several years as an analytical chemist, I've done many many titrations for alkalinity and hardness, so I understand titrations pretty well. I'd love to have a definite endpoint, rather than a subjective color comparison, being color blind doesn't help. Guess I'll start tracking down the FAS/DPD kit so I know my real Cl levels. I just spent ~$50 on the Taylor kit which I thought would be the answer to my problems.

And after all this, it still bugs me that I can get 2 very different pH readings from 2 different kits.