I've got one of those, and have worn it virtually every day for the last couple of years. I like the robustness of G-Shocks - this is my second - and the fact that you can wear it in the shower, when swimming etc if you are so inclined. keeps good time too.
Another good thing IMO is that there aren't 800 different settings/displays, and it's very straight forward to set - although the hands set button is a bit tricky to keep pressed down.
What I don't like about this particular watch is that I can't see the digital display (for the date, stopwatch etc) clearly in lower light, nor does the luminous bit on the hands work very well. I think the digital display should be larger to be effective. Might be my eyes of course!
The Argos price looks very high. My local Hinds has them for about £70, but I paid less than £50 from a supplier on Amazon; definitely worth shopping around!
So, the verdict from me is that it's a good everyday watch, but for me at least, not so good in lower light conditions.
Hope that helps.