I have an ArchLinux installed at home. Well I am unsure on what to think. It can be used to go on the internet, have the latest software but if you are serious on coding stable things well... you're going to cry.

Since you always have the latest packets ready your code is going to be often broken by changes in the libraries (damn Boost!). Other problem, if you leave your computer untouched for 1 months you'll have 1 Gb of updates to do.

But it's still a very good distribution, just be careful about what to use.