New Mac coming, need a word editor

I ordered a MacBook Air today and I am a writer. I am aware of iBooks Author that I plan on using for my next book but was looking for another word editor for short stories and other things. I hate using Google Drive as the cursor constantly lags and I am always behind when I type fast. Any recommendations on a kick ass word editor for Mac? Something with a fun interface that isn't too expensive? Thanks for the advice!