Technology has come a really long way over the last 10 years and we have found these to be pretty amazing for smaller runs and quick turn times. We have a few in our office which we use constantly, and the people at Heat Press Nation have just about every model to choose from.
Personally, we have found the Hotronix to be easy to work with and very effective but there are many out there we have not tried. The screen print looks and feels like it was printed on your shirt and it washes and has held up the same as traditional screen printing. Sometimes it is best and most cost effective for an operation that wants to run smaller numbers and to do them quickly.
Watch the video below to see how to use it.