The funny thing is, I mainly like the 3700 because of the USB external HD option. I know that most people turn it off because it's so slow, uploading and uploading from it but for me, I have a Westen Digital Media Player (WD TV Live) that's connected to the router(wired)it doesn't have Gigabit but since I use it, I can enjoy a movie that I downloaded(MKV with DTS sound)without interruptions. I usually watch movies at night with my wife in the living room and I used to stream(wired) from my office where my daughter used to use the computer at the same time and usually the movie would just start jumping or stop completely and it was unwatchable. Maybe my old office video card was overloaded with streaming a movie while at the same time downloading or surfing the Web. I installed a 2TB external HD in NTFS and since then, no more troubles watching moving while my daughter is on the Web. I don't think that the 825, even though it has a USB connection, can be used with an external HD for streaming videos on my WD TV Live from all I read about it. I have 2 computers connected wired in Gigabit with cat6 cables, my Android smartphone connects wirelessly and my daughter's Iphone connects wirelessly too. I find it stable and reliable even though I heard that there was a lot of batches of them that were defective mine has been rock solid since I bought it about 6 months ago.