Microsoft's Surface Pro has finally arrived, the company's long-awaited tablet that's also a full-fledged Intel-powered laptop that can run real Windows 8 applications. Is it worth the wait? Will it slay the iPad? Replace your laptop? Or is it Microsoft's final nail in the coffin? Let's see what the experts are saying.

Bottom Line: It's not a great tablet (too heavy) and it's not a great laptop (too lightweight). It's also expensive and doesn't come with Microsoft Office.

Mossberg: "But just as the Pro is compromised as a tablet, it’s compromised as a laptop. You get fewer ports and less storage than on many laptops and a keyboard that can’t compare with those on many laptops. Some users may not mind the price or bulk of the Surface Pro if it frees them from carrying a tablet for some uses and a laptop for others. But like many products that try to be two things at once, the new Surface Windows 8 Pro does neither as well as those designed for one function."

Bottom Line: A compelling concept that's ultimately compromised by its dual nature not excelling in either mode. As it stands, it's not quite ready but the future looks promising.

Stevens: "We're still completely enraptured by the idea of a full-featured device that can properly straddle the disparate domains of lean-forward productivity and lean-back idleness. Sadly, we're still searching for the perfect device and OS combo that not only manages both tasks, but excels at them.

The Surface Pro comes about as close as we've yet experienced, but it's still compromised at both angles of attack. When trying to be productive, we wished we had a proper laptop and, when relaxing on the couch, we wished we had a more finger-friendly desktop interface -- though more native Windows 8 apps might solve the problem by keeping us from having to even go there."

Bottom Line: Get over the price. This is an unprecedented hybrid device with unique features that are great if you need them. But the 4 hour battery life is a drag.Pogue: "The Surface Pro is an important idea, almost a new category, and it will be the right machine for a lot of people. It strikes a spot on the size/weight/speed/software spectrum that no machine has ever struck. You can use this thing on a restaurant table without looking obnoxious (much). You can hold it in one hand to read a Kindle book while you’re standing in line."