PSE certainly quite adequate for most photo editing tasks but obviously it is a cut down version using some of the 'Elements' of the full blown Photoshop. I think Adobe may want to entice you to the purchase of the full blown Photoshop with this taster :biggrin:. There is a large differential in price between the two products and unless you need the added functionality or you do not worry about cost then PSE may serve you well.
I think like Geoff that you should consider LR which is a very good image editing tool and of course a very strong asset manager. You may find that this is the only tool you need for the vast majority of your work