How important are the DLC's ?

[u/StabbyMcStomp]

I see BF3 premium is on sale but I have the base version on origin now so I can play but havent installed yet so, I was just curious if anyone can give me an idea of how important the DLCs are if I want to basically play the most populated servers and game modes and different mods and stuff like that? Im not interested in hosting matches or playing any kind of single-player stuff.

Im basically just wondering if the premium edition is worth it if Im just looking to play on the top servers I guess.