TiVo is just about dead. Losing more money all the time and the new pricing model is only going to lose them more subscribers.
Once their service goes you'll be left with a completely useless box. My advice is to take the money you're willing to spend on the TiVo and get yourself a PC running SageTV. Whether it be Sage for Windows or Sage for Linux.
http://sagetv.com - they should have a list of companies pre-building finished units. The new version 6 software will be a significant improvement over the current v5.
It's not a TiVo, but it's about the next best thing and does offer a lot of features not possible with any TiVo - including controlling two or more external tuner boxes. To run a second TV you just need to use a Media Extender (which can be a dedicated piece of pre-built hardware or a small PC running their Client or Placeshifter software). With their Placeshifter software you can also watch your recorded content from anywhere in the world with a net connection - so this gives you the bonus functionality of a SlingBox.
Two other PC-basd solutions to look at are Microsoft's own MCE and ReplayTV's newest release.
Sage and MCE have no monthly subscription fees.