Need some help to decide the expansion and the server

Hi all, like the title says, i need some help , because im a little bit confused about the expansions and servers. So, my questions are : which is more " blizzlike server" ?
What expansion Are more blizzlike , TBC, or Wotlk ?
And if in TBC the char. Can be geared up in the game ??, ( without buying something with real money).
Thanks !

It's not that no one would help you, but if you look up in the right corner of the tool bar, there is a "Search" button, use that, this question gets asked so many times, and honestly, when I came to this server, I used it quite a bit before just posting a question, that I knew would have been asked countless times.