I've always shot a two piece. I like that they typically hold the arrows close to the bow. If I'm hunting out of a base camp I'll carry a 4-arrow, but if I'm hiking in I carry a 6-arrow.
I use a cat quiver by rancho safari. My preference is no quiver on the bow. I like the balance of nothing additional on my bow. They make several models with built on backpacks. I have used them for 10+ years and will continue to do so.