After a fair bit of research I chose easySim as the best option for my daughter while travelling in New Zealand, Australia and south east Asia. The pre-purchase help service was excellent and all my questions not covered by the very helpful online FAQs were answered very quickly and knowledgeably. My daughter has found easySim easy to use and reliable. With WhatsApp etc., being data only has not been an issue. Not having to buy and switch local sims has been a big plus. My wife and I both bought easySims ourselves when we went out to meet our daughter half way through her travels. I would definitely recommend easySim ( and have done already).