If you're building around Intel's new Core X CPUs on a budget, MSI's X299 SLI Plus is worth checking out. The board delivers solid features and even a little style without going overboard.
Internal and external USB 3.1 Type-C; Two M.2 connectors and a U.2 connector; Classy RGB LED lighting with MSI Mystic Light software; Clearly marked headers and connectors
Lacks Wi-Fi; Video card can block chipset LED; "SLI" focus in name; but some users will want more gaming features