In retrospect I should have gone with the Epson or Brother to get the kind of service a real business needs, or not get in it at all until the technology matures.
Epson and Brother still have their issues and still need a really good amount of use.
The titanium Oxide in the white ink is still an issue and that's where you would really get clogged heads quickly if you don't have the volume to keep everything flowing.
I'm still waiting for the tech to be far mature then it is now or until the volume is there to justify it for DTG (for me to invest in it as it is now, it would have to equal my embroidery volume, which just isn't going to happen).
If you don't need white ink, consider a CMYK setup which will double speed and eliminate troublesome white ink. And of course, if you don't need to print on cotton, Dye-sub is proven technology and way less expensive.
I really do like the dye sub method. If "you" are able to cut and sew a finished garment, you can actually have a dark finished garment as well (still have to start with a white base, but print the dark color that "you" want).
Print heads clogging can still be an issue, it too needs a good volume associated with it.