I've got one of the Verizon Mifi's but grandfathered into their unlimited data plan (had several previous generations of Verizon USB devices) for $65/month. I'

I've got one of the Verizon Mifi's but grandfathered into their unlimited data plan (had several previous generations of Verizon USB devices) for $65/month. I'm very happy with it. For example, I can take the train from Pittsburgh to NYC with full connectivity all the way, which is pretty amazing. Works well on the East coast and on the West. (Avoids paying ridiculous hotel wifi charges; the more expensive the hotel, the higher the charge.) And I use it when I'm in my remote office (near-beach house) in CT as my main line. Can't really do VOIP, but otherwise it's fine (1+ Mb/s).