T Mobile notebook and 3G deal

#2
Depends how much you're going to use it.

If it's not very often, then Pay as you go for £2 per day and a £200 HP Mininote 2133 would be much cheaper.
 
#3
Most like be used on a daily basis, if not then defo every weekend for 2/3 days so would work out cheaper in the long run.

Added bonus is that the 3G stick can be used with other laptop.