Finally got around to trying a hanger steak yesterday.
I can understand how this got popular in a hurry. It's a very tender cut with a lot of flavor.
Unfortunately, the way it came was covered with a sweet red wine sauce and served with fries some of which were made from sweet potato which further sweetened the total effect. It ended up being cloying and overpowered the meat. I had to scrape around it to taste it cleanly.