6027 has always been the Release version, it was never a Beta version. Pre-SteamPipe, I had my Ping be single digit before, isn't that difficult when you are playing in LAN Mode. But Post-SteamPipe, Valve optimized the Network stuff in HLDS, so seeing a lower ping is natural
I do not browse the forums regularly anymore. If you need me for anything (asking questions or anything else), then PM me (be descriptive in your PM, message containing only a link to a thread will be ignored).