I had the same decision to make, and with the specs/features so close I went with the DT-10 solely because I needed felt the Korg was a bit more "solid", the battery usage was very long lasting (50 hours), and that the brushed metal finish matches my Mo' Control pedalboard almost exactly.
Did I go for the bling? Yes, but only
after I compared the important facts.

The after-purchase report is also a very positive one - I haven't needed to change the battery yet in over two months, it tracks extremely quickly and down to a low "A" with no problem and most likely could go lower, but I haven't had the need to tune lower yet.