Thanks all for your replies. I'm going to try to do some test drives tomorrow with and without the Tech package. I think I can easily live without the Nav so hard to see that it's worth so much - actually all the packages are so expensive!
Thanks for pointing out the issue with the Bluetooth and the Treo. I will try the integrated Bluetooth out with my iPhone and see how well it works. I have a Motorola car kit in my car, and I've found that honestly it does not work as well as some of the newer Bluetooth headsets! But the Connection package has a lot of other features that I would like over the Convenience package.
As for the question of the Prius, although it is more fuel efficient, I don't think I'm ready for something quite that small! It scares me to think what happens if the Prius gets hit by a Tahoe or something. I know it has a lot of airbags and all that...but, well, I wish there was a Volvo hybrid
Thanks again!
Jason