I saw this at the Atlanta ISS and if you haven't seen this DTG machine yet, it is worth a look when you get a chance. I have been watching and participating in this market since its inception and this is probably the first dark DTG machine under $40k that has me looking twice.
http://www.anajet.com/mpower/products/mpower/Most dark dtg machines run with a converted Epson print head (i found usually a 4880). They print fantastic but have issues with clogging especially with white ink. Daily maintenance is required to keep them flowing smoothly and efficiently. The mPower from Anajet has a print head specifically designed by Ricoh for this machine and does not require the maintenance the 4880 does. I found a current owner of an mPower at the show and he told me that he returned from a two week vacation, turned the Anajet on, printed the first shirt perfectly. no maint routine ran, no magic dances, just turned it on, hit print. I was shocked to say the least.
Print speed was impressive also. I owned a Brother GT541 until recently and nothing had come close to matching it for speed and reliability. The speed of this Anajet on light garments was quite impressive. In fact, the same or maybe a bit better than my GT541. Dark shirt still require 2 passes (white then color) and still require pre-treat which i doubt will ever go away.
Quite a few other things impressed me about this one. If you are looking for a DTG machine that can print darks, this would be one to checkout in my opinion.