i would say no one is any better than anyone else… they are all cellular interweb cards and are competitive with up/download speeds…
try to get a deal! I do believe that without the unlimited usage plan, it bills you on amount of information transferred rather than time used… so if you browse pittspeed for 6 hours may only be $1.50 but downloading 5 porn movies could be $15.00…
so make sure to ask how you’ll be getting billed!