I would like some advice rebuilding unique network. My client manages a building which support up to 30 companies. There is currently DSL internet which is available to all companies. They are looking at adding a cable internet connection for dual wan purposes. currently there are netgear FSM7328S and FS 526T switches installed. Each company may hook thier computers staight into the network or may opt to have thier own router nad internal network. Internet connection have static IP. Several compnies want to access thier own internal networks. Current router is crashing regularly and looking to replace. Thinking about a Sonic wall TZ 190- any suggestions or comments.