I like that it's not just one tool, but several tools in one easy-to-use package for all your needs. It has also been updated frequently with new features as they are released by other providers (such as Cisco). There were some things missing from previous versions of the software - no native support for Juniper SRX devices was very disappointing at first glance. However there have since come updates which resolve this issue so we're hoping those issues will be addressed soon too. We use Tinc works primarily for traffic analysis using NetFlow/IPFIX data and its reporting functionality. Our main focus now however is monitoring our VPN tunnels via IPSec/L2TP connections rather than IPsec alone due to performance requirements; therefore only L3 flow information can currently be monitored correctly through this product.