looking at the EXIF info, I see Jamie uses a D50 and probably doesn't need the NeatImage software for noise reduction (in fact from his last pic, maybe he needs a noise-inducer ), whereas Walwyn uses a Pana FZ30 and maybe sometimes does.

NeatImage is as useful for sharpening, which it does more subtly than 'unsharp mask' and can be used for that with noise reduction sliders left zeroed. It is a complement to PS not substitute, in fact often as not the layer it is used in can be pulled back to say 60% opacity to just give a slight 'edge' but avoid halo etc.