Hey @Miss Kat, I was with Optus for many years and was always pretty happy with my service (through some weird magic I even went 6 months without being asked to pay bills once!) but then after a stint abroad I went with Telstra and they were awful.
When I left the country again I went through an entire YEAR of calls and emails trying to get them to disconnect my service and wipe the charges they claimed I owed them. All while trekking in the Himalaya. So I will never use them again or recommend them, even if they have the best coverage.
In Germany (now) I was with T-Mobile because their network here previously, but switched to Blau.de recently for better monthly rates. In Canada I was with Rogers and they seemed fine too.
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