I just had my Explorer 8000HD swapped out by TWC for a new 8300HD which has HDMI w/HDCP. To me, this makes the 8000HD a moot point...
This is my fourth unit - thank goodness I didn't have to buy these things! I keep them well-ventilated but the hard drives just get too much use apparently. This last swap seemed like a different problem and was intermittent, but I wasn't about to deal with it any longer. Getting the 8300HD was a pleasant surprise.
I like how the unit has a "garbage in, garbage out" mode whereby it will pass 1080i, 720p, 480p, etc instead of upconverting all of it to the selected format. This means that the scaler in my display (much beter than the one the SA unit uses) handles it from there.