According to Heirloom Creations, the Panasonic 360 Freestyle cordless iron is one of the best irons for quilters, as of 2015. Reviewers state the iron heats up to temperature fast, before and after ironing a segment, and the steam option on the iron is very good.
Another highly rated iron, according to Patchwork Posse, is the Oliso iron. While it is expensive, the reviewers state the iron gets very hot, and the steam option works nearly flawlessly. The Rowenta iron is also rated highly by Patchwork Posse. This iron performs very well, has a reasonable cost and is customizable, although the test unit leaked a little.