I have the bread handbook, and it's great for first-time bakers, in that it explains everything in detail. It really helps with the baking if you understand the whole process first. Never had a failure from it, which I was pretty impressed with!
Once you get the basics, you can then experiment further - I make a quite excellent roast pumpkin and walnut sourdough, based on the standard sourdough in the book. Just threw in some chopped up, slightly caramelised roast pumpkin and walnut at the last kneading stage (any earlier and the pumpkin will break up), works a treat. Pumpkin seeds on top make it look nice and pretty too.
Never used any other bread recipes, as I'm more than happy with what's in the river cottage book!