Ok, I've been doing some research... It turns out that transfer prints made using ordinary printer inks will fade badly after only a couple of washes. To make a long lasting T-shirt print you need transfer prints that use Plastisol inks, the same inks used by silk screen operations. Only the Plastisol ink transfers will hold up over time. I'm going to look into what's involved in getting transfers made using this special ink.
Check out this video:
[ame="https://www.youtube.com/watch?v=HxpiCRcFCao"]Iron On Transfers SUCK - Here's a Better Alternative to Printing T Shirts - YouTube[/ame]
John