What is best between 2 way speakers and 3 way speakers?

What is best between 2 way speakers and 3 way speakers?
3 Ways are much better, but it depends on what you are after. Stock car, stock speaker holes, 3 ways are better. Totally custom, multiple speaker holes, 1 or 2 ways are better.
reason being. as far as sound and music you have 3 dimensions High Low and Mid, a 3 way wraps all 3 into 1 self contains speaker, but its tightly contained, tiny tweeters, and not much bass.
If you have the space to play a 1 way is best. because you have a speaker that is designed for each signal. subs for your bass, and tweeters for your high voice and instruments, and your mids to bring them both together. if everything is separated you can aim your sounds where you want them, like tweeters, subs don't really matter that's why they are typically in the trunk and not mounted under the seats. so if you are just updating the speakers in you car just go three way, they are easy to install and typically replace your stockers fairly easy, instead of adding a bunch of other stuff to your car. I typically do 4 3 ways, 2 front 2 in the rear deck under the glass, and a single sub in the trunk(like a 10), and no amp. if I put an amp its a 4 channel and its going to my 3ways, and my sub will probably be taken out. it depends on what brand you're using, sony-ok pioneer-better, the German stuff like blaukpunct or Bose- much better, it just depends on the sound you are looking for. I rather hear the voices over the bass. so it sounds like the artist is sitting right next to you.
and obviously the more expensive the speaker, the better it will sound.