I bought Antec Silver Compound Formula 5 yesterday at a local computer shop. I was looking for Arctic Silver 5 but they had Arctic Silver Ceramic and Antec Formula 3 and 5. I was wondering if I made my best decision. If someone could tell me a little bit about the Antec Thermal compounds, nothing technical just which one is better. I have an i5-2500K, I know I need a vertical line and all that good stuff, going air cooled with my XIGMATEK HDT-S1283 120mm Rifle. Given my options I think all of them were better than the Dynex crap I bought from Best Buy awhile ago to get my system up and running. Thanks in advance guys!