The situation with split mechanical keyboards is very odd. Fans of non-split keyboards have a wide range to choose from, including keyboards that have an entirely standard, fairly traditional layout, with every key in its usual place. Those that prefer split keyboards, on the other hand, have to choose between a selection of tenkeyless freaks of nature without even a standard navigation cluster between them.

(I would also buy a MS Natural 4000 with decent switches. Not sure I'd pay hundreds, though, because I'd like to buy several. Additionally, the fact the 4000 is so cheap is one of the reasons it's so good.)