I finally pulled the trigger and purchased a HDHomeRun. I'm impressed, really impressed.
I'm running a MythTV backend on VIA EPIA ITX board using Ubuntu 6.10 Edgy with two PCI capture cards. The PVR-150 connected via s-video to a Dish 301 receiver works great. The other, a DVICO FusionHDTV has always been a pain in the rear and I never could get it working smoothly.
I watch under OS X using MythFrontEnd, like I said, the PVR-150 works well. MythRoku would be great but it needs updating to the new protocol that the current version is running.
From start to finish, about 3 mins to get the HDHomeRun up and streaming into VLC on OS X using an Intel core duo Mac mini with 1GB of ram. Full blown ATSC HD streaming with sub-channels. Not a single glitch in decoding which shows the performance power of the Mac mini. Even with MythFrontEnd running together with VLC, I never saw less than 40% idle.
I still like my HD1000, so far nothing I've seen comes close. I'm slowly ramping into a roku development enviroment to get try and get MythRoku working with the new version of MythTV.
BWT, the current replacement offering from Roku is a joke, it's programming is too closed and limited. The hardware is a big step backwards from the HD1000 and I don't believe what they say about a more capable unit in 2007. It's going to be as software crippled as the current unit. I don't see why any of the current Roku developers would want to touch it so they have lost their third party developer resource.
Anyway, enough rant, a big plus for the HDHomeRun regarding ATSC streaming. It should be a snap getting it to stream to the HD1000. My next step is to get it integrated with the my existing myth backend or maybe a slave backend running on OS X (yes, MythTV backends under OS X are possible now).