The New Balance 574. I've tried replacing them with similar shoes from other brands, even Asics which are considered good. But, nothing feels better on me feet.
They have a great sole that's just right. Not too hard that it'll hurt your whole back, knees and feet, but not too soft that you'll sink heel first into them either.
The heel is raised just a little which seems to relieve a lot of tension in my lower back. It also supports my feet's arch which relieves tension in my feet also. They're usually pretty durable, though I found the build quality to have decreased in the past 5 years. The sole also doesn't last as long as it used to.