Buying EQ2Follow

Ok im going to be buying EQ2 but there are so many expansions... do I need to buy them all? or just RoK? Thanks for the help^^

Thanks! started last night on trial version and had a lot of fun as a guardian. Going to try out shadownight and Warlock also tho. Im actually coming from FFXI where I was a 75(highest lvl you can obtain)PLD 75 Whitemage 75 Ninja there. Seems as tho PLD here is very similar to that, in that they are tanks which is awsome so going have to try that out also =) Got to lvl 9 Guardian lvl8 Warlock last night also.

The controls are interesting as it is very very user friendly for PC users where as FFXI was more of a gamepad type game and keyboard even for PC users was more of just for typing. Starting to get a hang of them tho. A lot of these posts are very helpful for newbies also thanks^^