The guitar !
What is the best instrument to play?
I would say the best instrument to play is one that you feel a true passion for and love the sound of. Just know that you probably won't sound great right away. It takes lots of time and practice to sound good.
For me, the best instrument is the violin, which I have played for 15 years. And no, I don't just play classical music.
I like the piano and guitar and I also LOVE the violin.
by my mind, it depends on what instrument you like the best, so the passion, patience and perseverance are important. If you have 3 kinds of these, then you can play them very well.