Well saidThe fact that it works so reliably and does what it is designed to do pretty flawlessly. The quality of the prints seems to be excellent as well.
Service and support also play into the final costs.
I would rather pay $20,000 for a machine that "just works" and that people always post positive reviews about than half of that for a machine I have to fight with to get working or that produces sub quality prints.
Out of all the things I've heard about all the DTG machines, the Brother consistently gets good reviews with the only caveat being that it doesn't print white ink.
Other printers seem to get more mixed reviews.
That is why we went with the Brother even though it cost more. great machine, runs non stop, great service (direct2shirt, even though I have never had to use them for any mechanical issues) They are just nice people to work with and i am glad I bought from them