We do DTF in house for small order's and one of high color print's, the problem with DTF is large print's with full color still feel like crap, I 've got sample's from a bunch of different companies but all are left chest or cap size send me a 13 x 15. Screen printing ain't going anywhere no time soon, they said DTG was taking over, see where that went right, now DTF on the other hand is a much easier process than DTG and if you ever get large print's nice and soft it's a great partner with screen printing. Far as Custom Ink and 4 Imprint's who knows and for choosing DTF or screen print order size and color max