I have a Windows 7 Pro 64-bit tower attached to an LG 55LW5600 TV with a DisplayPort to HDMI adapter. I also have 4 Series 2 TiVos on DirecTV. They use a Toshiba DVD recorder to upscale and convert to HDMI (no s-video inputs on the TV). I want to add at least 4 ATSC tuners and use Media Center to record the local OTA channels in HD, but there's only one PCIe x1 slot left. The Hauppage WinTV-HVR-2250 and the SiliconDust HDHR3-US seem to be the best choices. I get a signal strength of about 85% on all the channels I want using a Terk amplified indoor antenna in the attic, but I'm concerned that splitting it to feed two dual tuner devices will weaken the signal too much. I could use two Silicon Dust network tuners or one Hauppage card and one SiliconDust. Does anyone have any suggestions or experience with both devices? If the Hauppage card is radically better than the SiliconDust tuner I could free up a PCIe X16 slot and a PCIe x4 slot by removing the Nvidia Tesla card that's installed, but I would rather keep it.