A few months back I got the Sony SMP-N200. Got it for 50 bucks @ amazon.
After purchase saw it @ Sony for same price w/ 3 month free hulu plus. Wouldn't have kept hulu plus, but would have checked it out.
I am not sure if it has all specs you're looking for check it out. It is streaming netflix well for me. And has played all the files from flash drive w/ no issues. The largest file was a 4+GB .mkv. It did all I needed to do @ the time and the price was right. I think the specs were better than the comparable roku's.