I currently picked up an older Series 3 (OLED) for cheap on Craiglist. Mainly got it for its hard drive to put in my other Series 3 (OLED) lifetime unit. Everything works good so far, but I was thinking of then possibly putting in another hard drive I have into this recent CL Series 3 & then trying to lifetime it later for $99. However, I might be able to get a hold of a Series 3 TiVo HD. The model that has two cable card slots, but can accept 1 M-card or 2 S-cards. I thought I could then maybe lifetime this unit instead. I like the front clock of the older Series 3 (OLED), but other than the cable card advantage, is there really any other advantage of this TiVo HD over a Series 3 (OLED)? If so, what?