Which server to join and what faction to play?

Hello friends!

I am a returning player after a year. I am looking for a nice private WoW server and I remembered enjoying playing here on Warmane. But I guess a lot has changed since that time... So I am asking you, if you can help me decide which realm should I play and what faction is more perspective on a realm (where will I be able to catch up, where the player number makes it possible to enjoy the game, which one works the best, where I wont feel like playing alone etc.)

Thanks guys & See ya in the game