Well, that's an opinion; but I would go with the Lazle server (s1.lazle.in).
Chat with our AI personalities
There are many Minecraft Survival Games server. The best one I think is CraftRealms(hg.craftrealms.com).
There is no BEST server in minecraft, each minecraft server is the best to some person, but others are not. The best minecraft server is a matter of opinion, whether you think it is the best or not.
The Best Minecraft Server EVER is mineplex the ip is us.mineplex.com or eu.mineplex.com
There is this Server called Punchblocks its IP: punchblocks.net Its the best server but you have to follow the rules.
Bukket download it for awesome things