Network monitoring question

How did forum members choose their current network monitoring system(s)? E.g., open source/private label software, probes, third-party services, etc.

Your input in a quick 10 min. survey is greatly appreciated, and there’s a chance that you can win one of four iTunes gift certs – good for free apps, music …

I’ll gladly share the results here when the survey is complete.

http://networksurvey.questionpro.com

Thanks!