I love a good heist movie, and a good one ticks all of the important boxes: a sweet soundtrack. A cool premise. Plenty of "preparation montages" where you see bits of the plan come together, but not the whole picture until it's executed.
But the best part of heist movies are the OMG moments. Just when you think the protagonists are going to get caught, some quick, on-the-feet thinking, or pure luck or chance or circumstance extricates them from it.