I really don't have a preference, especially since most of the boards aren't available mounted. The artwork on the old boards was better, in general, but the uniformity of the SK style boards keeps things more consistent. To me, the biggest advantage to the new boards is that I got the mapboard pack a few years ago and kept them flat, not folded. Much nicer to use, and a lot less space (and weight) taken up for storage and travel.
That said, except for the annual trip to WO and the Brackin Basement Bash, most of my play is on VASL. Even so, I like to work on set ups using real boards and counters when I'm getting ready for new game.