Cisco just bought that Linksys division. They didn't add any real 'Cisco' to it. And the rv-series was the first stable multi-wan router out there--I know. I bought all 3 available for <$1000 back in 2004 and tested them all out on two 6M/256K cable modems. Nothing was as stable or easy to config as the rv series.well not everyone has the skill to use a configurable router. Ive seen those multi terabit cisco routers that tier 1 and 2 ISP uses so when i first saw the cisco rv series i was very shocked to see cisco building a consumer router instead of using linksys only and that it had many complaints about it.
The power of the Mikrotik and pfsense, monowall, etc products is their infinite configurability. But the downside is that if something isn't working, you don't even really have a number to call or a super-large user base to find peer answers for a problem.