I just installed 3.7 beta on my small production system. I only have a 100 SL. The install went fine and I like the new options on the netfow tab in the web interface. I am a good production test platform, small and not a lot to rebuild or restore if needed. The install was painless but I only have the NTA add on.
thanks for that feedback, and congratulations with being the first customer posted to NTA 3.7 Beta thread!