To any Hemingway fans out there.... which book of his would you recommend to start?

I ordered a copy of A Farewell To Arms since life during wartime sounds like a fun read. I've also been reading a collection of notes and letters from Hemingway and the majority of my favorite writings were from The Green Hills Of Africa. Thinking about getting that one!!!!

Any recommendations?

P.S: I'm not a big fan of the collection sets I've found for this books. Either their too expensive or the book covers are just horrid.