Squidge: Tmobile has unlimited data for $25/month with a voice contract and $40 without. For $60 they have the one with a 5GB cap for use with their simless 3g card, but the card below will make it possible to use the $40 smartphone total internet package with AWS 3g.
Their usage agreement:
To provide the best network experience for all of our customers we may temporarily reduce data throughput for a small fraction of customers who use a disproportionate amount of bandwidth. Your data session, plan, or service may be suspended, terminated, or restricted for significant roaming or if you use your service in a way that interferes with our network or ability to provide quality service to other users. Some devices require specific data plans; if you do not have the right plan for your device, you may not be able to use data services. Additional charges may apply. Domestic use only.
I know I used about 15GB last month, so I'm not in the realm of hard core users, but still well beyond the cap on their conventional 3g internet plan.
Check out the
Option iCon 452. It can be used on any GSM 3g network, including Tmobile's AWS. It has a sim card slot, unlike the Huawei 181 AWS capable modem. It has support for HSPA+, which Tmobile will have nationwide next year. It's also a USB 2.0 high speed device, unlike the Huawei 220, so no hub is needed, and it won't drop all connected devices to full speed should you choose to use one. It seems like it should work out of the box with linux, but I don't have one, so I can't confirm. There are; however,
FreeBSD drivers which might work.
If this can be made to work, a short usb cable, a couple of pieces of velcro tape, and a google voice port would let me replace my phone and n810 with a pandora.
Now if I can figure out how to install the n810's transflective display in the pandora, I'll be set.