As I've seen those and let's face it, all models at the shops the best types are the ones folk get in pairs. They get TWO because they can keep a backup on the second model.
Yes there is some solid state models now and those might hold up well against what usually kills external drives.
It seems there are two different kinds of External hardrives.
1. Ones with internal AC and internal fans.
2. Ones with external AC that you can hook/unhook on the hardrive and with no fans but instead with glossy cooling case (kind of like aluminium or something).
Which is the best type in terms of reliability and lifespan?