"If the T-shirt design related to your colors and photorealistic images, then digital printing should be your primary choice [sic]."
Digital direct to garment printing is the best way to get high quality images, and a high quality feel with gradients. Not to mention the fact that digital DTG is fast. People that have tried DTG are passionate about it. I remember when I was younger and I wanted to get a couple of custom t-shirts made. I had the ideas, but when I went to my friend who owned a t-shirt printing shop to ask about getting them done, I was disappointed. He told me that in order to be affordable on a per shirt basis, I would have to order a large quantity of shirts. The time he would have to invest in making screens, just to do four colors, would be cost prohibitive for only two or three shirts. That was 16 years ago. Today, I can walk in to many shops, and walk out that same day with a custom printed, high quality shirt with gradients, and thousands of colors. And, all for around $20. There are also many online custom DTG printing shops. I can design a shirt from the comfort of my living room, and have it sent to me. When people finally realize the awesome power they have with DTG, the clothing industry is going to be radically changed. Big name corporate clothing designers, meet the Indy artists of the world.