I've been using their 30 Mb service for 6 months and it seems to be working as promised. The download rate actually gets above 40 Mb at times but is usually between 30 and 35 Mb. So far I'm satisfied with the service but I'm not happy about the cost increase after 6 months. If I can find a better price on the modem I'll stop renting it ($7/month) and buy a modem. The SB6121 modem costs about $85.