As my Photoshop skills have increased, the task has become a little more onerous, although the finished images are vastly superior to what I was producing when I first started out. But the more one learns in Photoshop, the longer it takes to process an image. I guess the secret is to keep the post-processing fairly simple for run-of-the-mill shots and then really go to town on the better images, where the law of diminishing returns does not set in.
Here are a couple from St Marys, Georgia. Whether they are run-of-the-mill or something a little better, I will let you decide. B&W conversion with Silver Efex Pro in Photoshop CS3.