Depends on what you need??
communicator such as Nk9500 and Nk9300 , durable and battery long lasting , not easily hard reset and phone wise good signal compare with PDA phone.
meantime O2XDAII, IIs, Mini so far battery last not very long ( 4-6 hours ) depends on talking time and bluetooth on.
Problem, open to many file need to soft reset and phone signal up and down.
