I currently have 3 TiVos. I will be looking to sell them within the next couple of months. I have a Tivo HD (Series 3) - annual service, Tivo HDXL (Series 3) - lifetime, and a Premiere XL - lifetime. I will be selling all three with plan of buying a Premiere Elite (or XL4) with lifetime, and some Tivo Minis for the other TVs in the house.
Of course, the Tivo Mini has to come out first.
I love TiVo though. I have only been using TiVo for a little over 3 years, but they are so much more reliable and functional than the typical POS cable co DVRs.