I view TV via Slingbox classic from overseas, but would like an inexpensive DVR with a hard drive to time shift programs. In the past when trying to use them, I've found compatibility problems--can't access remote via slingbox, which is necessary. I couldn't get my Walmart purchased DVR to work. Anyone have any recommendations of a Sling compatible DVR with a hard drive, which I could purchase on the market currently that they know is compatible? I realize that the Sling web site lists compatible hardward, but it's like finding a needle in a haystack to me. Thanks!