I know 6u is a somewhat less common spacebar size, but more than that I'm interested in knowing what differences are there available on keyboards when it comes to 6u spacebars. Are the stem locations different on many boards and so on.
E.g. the GMK Nautilus set offers a 6u spacebar with a centered stem. Are there many boards with off-center stems? I heard some Leopold FC-keyboards had some strange stem positions? Then there are all the gamer keyboards which can be tricky.