GSM Module selection

My Code requires to collect data from slaves and accumaulate in a file . then send the file via GPRS FTP to server.I am using UNO with LCD.The data collection part from slaves in over.The remaining part is to make file and send data via GPRS to server.

For this , I am searching a good GSM/GPRS module for Arduino

I have narrowed down to

or

Will they be able to solve my purpose.

Please help