I have a client with 2 locations. They have a vpn connecting both locations. They currently have a cisco RVS4000 at both sites. The latency through the vpn is very high. I have seen this at just about every place that I have rvs4000s deployed with a site to site vpn and have been replacing them as needed with sonic walls or fireboxes. This client will not pay for either. I want to replace the router at both ends as inexpensively as possible. Any suggestions on routers that would work in this instance.