[Business] List of Comcast's current Modem/Routers

I currently have 2 Comcast business locations, and both are using a smcd3g-ccr Modem/Router. Is there a current list of modems/routers that are possible to exchange with? The feature set of the SMC is very thin, and want to look at the options of possibly changing it out with another model that perhaps has more features. Any possibilities out there? Thanks, -- Cord Cutter Hauppauge DTV Tuner Card PlayOn.tv Hulu.com Netflix.com Windows Media Center Guide. Here's how http://homes.yahoo.com/news/how-to-pay-less-than--50-for-tv-001641275.html