Mark , I am to a Besta user , cannot go past them , I picked up my latest one on Ebay , just before I went back to China last month under the travel section , you can check and read about the different models on Powerdictionary.com , as you also run on 240 v , there is ones that are rechargable from the power points and we used it constantly and never got below half charge during a day then recharged it overnight , not having to worry about batteries , regards Robert .