All the data you can eat - over a dial up connection! Don't get three!
For over a month, I have a horribly slow sometimes disconnecting internet connection. I've called customer service three times and every time they promise me they are working on it. I had to buy BT Wifi access for 5 quid a day for the last 3 weeks, because they can't even tell me when the fix will be available!
In the meantime I continue paying my monthly bill. For what?? How can a fix take a month?? As soon as my contract ends, I leave three to never come back and tell this to all my friends!