Greetings all, I have two gray single tuner 40 hour series 2 Tivo's. One I got with the lifetime subscription, the other I bought at a yard sale last weekend for $25 (I thought it was a good deal). I'm debating putting bigger hard drives in, but don't really know how much longer they will be useful once the digital signal mandate kicks in. I have a couple questions that I was hoping you could help me with. 1. Is there any chance of me being able to transfer my lifetime subscription to a series 3 box? Or will I just have to wait them out until they hopefully offer it again? 2. If not, is there any size limit on the replacement drive option? IE - if I elected to replace my single drive setup with two 500GB drives is tivo going to be able to use the full 1TB? (does anybody know if 1GB = 1 Hour recording time?) Thanks!