For me it's easy...Brother all the way. The M&R machines are based on Epsons. I wouldn't go with a DTG machine that uses epson heads, they are really too small for the white particles, also, the Brother was designed to print white, the M&R isn't.
Just my take. Also, I have run a Brother gt541 for over 7 years now, and before that we ran a beta machine from them...I have had about 1 or 2 days downtime in 10 years of printing...show me another machine that is that reliable.