lookout: OK, a couple more questions about rbi... Sorry if OT (let me know if I should start a separate thread)
1. Does RBI suffer from congestion/slow downs at peak times?
2. What speeds can you realistically get with clear line-of-sight to the tower?
3. What home phones are compatible with the 3g modem?
4. Can you get call id/waiting etc?
I can answer most of those:
1) A little, but it's far better than it was in early 2012 when I first signed up. In recent times, I'm still getting around 10Mbps down at peak times. In off-peak I get up to 15Mbps.
2) My cell tower is 12km away, in clear line-of-sight. Speed measured a few minutes ago is:

3) Any home phone with an RJ11 plug. To be honest, I prefer to use WxC's VoIP service with an external ATA, rather than the built-in phone jack.
4) With the built-in phone jack you get Caller ID, but not Call Waiting AFAIK. However, with WxC's VoIP service, you get both of those and a whole lot more for just $11 per month.