When players discuss the different playing styles and expectations among different stakes in poker, it's commonly understood that the higher in stakes you go, the more challenging the game can be.
In practice this isn't always true. A higher-stakes game can feature numerous players of questionable skill, while a low-stakes game can be chock full of tough, savvy opponents.
But generally speaking, there is an assumption that the better players tend to move up, and the less skilled players stay where they are or move down (or out). That means the higher the stakes, the more challenging the competition and the greater likelihood you'll encounter players who know what they're doing — and maybe what you're trying to do, too.