Once upon a time, I bought a Surface Pro only to return it less than a month later. At the time, I felt it was a niche device lacking the foundational integrity of an iPad or a MacBook. I’ve grown a newfound respect for the Surface Pro line with the maturing of Windows, however, and now find the 2-in-1 nicely occupies the middle ground between a tablet and laptop. If I needed one today, Best Buy’s deal on the Surface Pro 9 with a 12th-gen Intel Core i5 chipset, 16GB of RAM, 256GB of…