http://www.linux.org
go there, click on distributions and look some of them over
linux is linux is linux really, they all use the same GPL software, only thing that changes is what package management they use if at all, what binaries it comes bundled with, and whether or not it uses sysV or bsd style init scripts
no such thing as a "best" linux, any of them can be changed into the other for the most part with some work........it isnt windows, you cant apply windows ideas to linux, doesnt work like that