We are using an RVS4000 and are quite happy with it. The only thing that limits us is the capacity of port forwarding using Single Port Forwarding plus Port Range Forwarding. It would be useful if we had just a few more forwarding slots.
Is it possible to use TWO RVS4000s in parallel? We would connect them to separate static IPs on their WAN side and feed a common Ethernet LAN on the LAN side. We don't want to upgrade to a high end router.