Hello All, I am a long time user with a S3, a Series 2, and a Humax DVD Unit that died. I found a TiVo HD XL at Best Buy on Clearance for $199 and a standard HD for $169. I have lifetime on my current S3 and am paying $6.95 per month for the other two units. How much will I have to pay for service if I buy one of these new HDs from Best Buy? I plan to retire the Humax unit. Advice appreciated!