What sort of Photography are you into? it all depends really I think that Photoshop can make a somewhat average photo into a great photo, I do agree with you though the original photo still has to be taken well you cant try and make a bad photo good by using photoshop. The photos are nice I like the sydney Habour bridge one! one thing I would pick is they look like there on the piss straighten up those horizons after looking at many photos this stands out alot! with the last photo I would have liked to seen more sky and less water. I say read on the Internet there is so much information about photography on the net and heaps of Pro photographers that will answer your questions on the forums.