If you get millions of visitors every month, have super hard-core needs, want to be completely hands-off with your website, or desire to be on Amazon's AWS platform, I'd recommend you check out Pagely. I host my website with Pagely because my livelihood depends on this site, and I want it to be always up and always fast.
I've followed the WordPress hosting world closely for five years. I'm confident in my recommendation. No host is perfect, but Pagely has been the closest to perfect I've found to meet my needs.