I just realised that while I was actually getting unlimited data for 600B on my AIS package last year, what I bought at the airport for 850B is in fact not unlimited, but rather limited GB after which you are cruising along at 400kb/s
Are there any really unlimited packages left in Thailand on prepaid? Dtac? True? Or is the 25Gb 6Mb/s package as good as it gets these days?
EDIT:
For those interested in coverage, here is a great tool. [[members only])
Seems like DTAC, True Move and AIS cover most of the country, but AIS has significantly better coverage of "4G+"