I ordered a new HDDVR a few days ago. They charged me $100 for it and sent me an HR22-100. A few days later I was on directv.com and noticed that I was eligible for a free HDDVR so I order another one. This time they sent me an HR21-700. I only plan on activating one and I will send the other one back. My question is, which one do you guys suggest that I activate?