My friend, all versions will do at least what you have inquired about. MIDI composing, controlling, editing, FX, recording editing and audio recording editing mixing the whole 100 yards.
X1, 2 and 3 are earlier version just like Windows 7 and 8 from previous years. Studio, producer, songwriter, musician and Platinum are names which indicate how big is this software package. Platinum contains all the magical whistle and bell, more than you need.
Good luck
Sam