Aldimobile now uses the Telstra 4g network and currently giving an extra 1gb on $35 recharge / plan to make it a total of 6gb and an extra 2gb on their $45 recharge making it 9gb.
Both offer unlimited sms and calls and both include some international calls.
I have aldi but their 4G network is pathetic, it is not the full Telstra one. I live in Melbourne and a normal Telstra 4G would be full bar but on aldi 4G it's 1-2 bars.
As a result I use 3G