I'll be the first to say that I'm more excited about the prospect of dual-screen laptops and computers than folding phones. However, the current crop of dual-screen laptops like the Lenovo Yoga Book 9i and the Asus ZenBook Duo are expensive and somewhat half-baked in terms of functionality and ease-of use. If you want that kind of enhanced productivity experience without breaking the bank, you might be better served by a dual-screen portable monitor. I've spent the last week reviewing the Acer PD163Q, which is a portable monitor that offers two 15.6-inch displays in a fairly compact form factor.