I have a paid account for Pro version of the current WordPress go-to version of Coming Soon Plugins. It's useful for getting up a quick CS page, but the ability to modify that page is minimal. It really didn't impress.

THIS ONE IMPRESSSES! You can modify everything, change colors, placement, content, EVERYTHING.

After testing it out, I maxed the deal out on AppSumo and canceled the automatic renewal on the other Coming Soon plugin immediately.

If you build WP websites regularly for clients, I strongly suggest you max out and buy a 3-teir license now. You'll regret it later if you don't.