AdvantagesWide range of features
DisadvantagesDifficult to navagate menus
AdvantagesWell priced, good fit, quality, choice of colours.
DisadvantagesNot completely unbreakable.
AdvantagesCheap! small, user friendly, no-one will ever want to steal it and you can replace cheaply if it breaks!
DisadvantagesNo locking device, non standard headphones, obviously not hi-tech!