Well, I have two Boxee Boxes. And, for streaming local network content, I think they're pretty nice. I would like to experiment with Plex on Roku though. The main benefit of that would be Roku supports Hulu Plus and Amazon Prime Videos. Boxee doesn't. If I ditch cable, I may have to rely on those types of services.

Also, I have the Ceton card in a Windows Media Center PC. As a DVR, I think it's great and definitely wouldn't mind using WMC with an OTA-only setup. However, I use an Xbox 360 as an extender in my bedroom. The Xbox can do Hulu, Amazon and Netflix but you need an Xbox Live Gold account. I don't get why I should have to pay Microsoft on top of those other services when I'm not a gamer. Linking internet media streaming to an online gaming service subscription is just silly.

At least Boxee would be fee-free.

I also heard that Dish Network might be launching a proper IPTV service. They currently run such a service for their "world" programming with a Roku client. If they can pull-off IPTV with good channels and (hopefully) a la carte subscriptions, I might be interested.