HP has updated two beefy mobile workstations cut out for specialized work. Is the refresh a winner, and how do they compare?

HP's lineup of powerhouse laptops has now entered its sixth generation with the ZBook 15 G6 and ZBook 17 G6. There are a number of improvements to what HP calls the world's best-selling mobile workstation, but the fact that these deliver above-average performance for specialized work has not changed. They're rather large, heavy, and expensive, but the features offered are worth the tradeoff for those that need them. Let's take a look at the ZBook 15 and ZBook 17 to see what they're all about in this dual review.