From today's perspective, Pre-Raphaelite art in its purest technical sense would be considered "hard-edge." The PRB link above notes that "sloshy" (presumably "painterly") art was something the brothers were strongly against. Subject matter varied, but Hunt's usually contained a moralistic or literary-with-moralistic-overtones core. But in order to earn a living as painters, the PRBs often found that they had to rely on portraiture. This was certainly the case for Millais, who "went establishment," being knighted and made president of the Royal Academy.
As for Hunt, I find his most important paintings more interesting than likable, though I don't actually dislike them. I suppose this is because I usually don't care for hard-edge painting.