I have the 3G model. I also considered going with a mifi type device. Here are some pros/cons:
Pros:
- can share with other devices if you have that need
- no restrictions on what you can download/view since iPad thinks it is using WIFI
Cons:
- need to carry around another device and remember to take it
- potentially shorter usable time based on battery/etc.
- locked into one Carrier (unless you get another "mifi")
- no protection against some heavy data usage not usually permitted with 3G
Use of an iPad/mifi is perfectly fine - in fact Verizon is selling that combo now in the States.
Pros:
- can share with other devices if you have that need
- no restrictions on what you can download/view since iPad thinks it is using WIFI
Cons:
- need to carry around another device and remember to take it
- potentially shorter usable time based on battery/etc.
- locked into one Carrier (unless you get another "mifi")
- no protection against some heavy data usage not usually permitted with 3G
Use of an iPad/mifi is perfectly fine - in fact Verizon is selling that combo now in the States.