I got a 3G iPad as payment for a job I did, so I probably would have chosen the WiFi model if I was buying it - in fact I did since I had already bought the WiFi and it was too late to take it back. Oh well - now I have 2!
The speeds over 3G on both networks seem about the same. The speed test app I was using seems to be having issues, but a "seat of the pants" test seems equal.
I looked at the Pixi. It was $29 and the Pre was $99. They changed that for this week, so I jumped on the Pre since it had a better camera, better screen, more memory and I like the keyboard better. It is also faster than the Pixi.
The Palm hotspot works the same as the MiFi and the USB sticks that I use in laptops. I am very happy with that performance.
I don't think that Verizon has the ability to do texts or calls while online. I don't know that for sure since I have been with AT&T and they do. The new Verizon line is also a temporary number until I get the AT&T number ported over. I tried to call the VZW phone while surfing and it seemed to pause the surfing while the call was going through, then resumed after the call was over.
They are offering the hotspot free for now. It is a special it seems, but no one can tell me how long it has been running or when it will expire. All you have to do is get a line and add the $30 data plan. The account has to be set up with the hotspot, but they can do that at the store and you will be up and running by the time you get home. Total cost - the cost of your phone plan plus $30. That's it.
So far it is working very nicely. I am happy with AT&T - my coverage is great - but I wanted the tethering. I did a 1 year contract and paid $99 for the phone so I could have the flexibility to return to AT&T when - if? - they get around to adding the iPhone tethering here in the US.