If you've only ever used Ubuntu and for only three years, then chances are you actually don't have a "pretty good idea" of how linux works. I don't mean that i

If you've only ever used Ubuntu and for only three years, then chances are you actually don't have a "pretty good idea" of how linux works. I don't mean that in any disrespectful way... but READ some books on unix. You shouldn't need to ask - you should just go try it out and form your own opinions. Use any type of linux/unix you can get your hands on and learn and form your own opinions, and read. If you've only ever used ubuntu, then using ANY other unix or other distribution is going to teach you something - just go for it.