HD. Not quite as crisp as Netflix or lightbox, but not all that far off.
No interruptions or buffering. At $55/month it's not too bad considering I'll only want it for 3-4 months per year, maybe less maybe more. Much better than getting a 12 mi th contract with sky since I never watch anything on other channels (that's why I had Netflix and lightbox)
Only real gripe is that you MUST watch the games live and in real time. If you are 20 mins late that's tough.