The Motorola Droid
I asked about tethering and was told that it would cost an extra $15/month. When I got home and looked for more information on the web, I got an unpleasant surprise. First, and less important, it's $30/month—less important because you can turn the service on and off, so pay for it only on days when you plan to use it, which for me would come to less than two months a year.
The serious problem is that the tethering option is to become available "early next year."
I could, of course, use third party software to tether without paying anything extra, as I currently do on my G1. When I asked T-Mobile's online technical support whether that was permitted, I was told that while they would not provide any support for tethering they didn't object to my doing it. Verizon, which seems to have a clearer idea than T-Mobile does of what tethering is, quite clearly and explicitly forbids it if you are not paying them for the privilege, something I confirmed over the phone with a (very helpful and well informed) representative.
So if I switch to Verizon now, I don't get to tether during trips over the next few months and can't be sure of being able to tether during my month long summer trip; in my experience, projected dates for high tech products and services not yet out mostly come down to "real soon now."
On the other hand, it does look like a very nice phone.