Thank you for your input. I've heard of CWF-UV (I thinks it's sold at either lowes or home depot), but after reading tons of testimonies and some advice from consumer reports articles, I've narrowed it to 2. It is between Sikkens $50 gal. and Cabot $25 gal., I'll probably go with Cabot due to the affordability and the good things that I've heard. Let me know (anyone) if you have preferences, I will take in all feedback and consider still your judgements. Thanks!