before you buy it's very important to go to a shop and hold the camera in your hand, try the buttons etc and also look through the viewer. It may be that the S5 has an electronic viewer, and you do have to get used to those.
Ideal would be to be able to take some pics with it because word goes that it's rather noisy at higher sensitivity (everything from 200ISO and upwards).

There are no Borg. All resistance is fertile.