I own it. I really love it
Singleplayer is long and great. I really love how they combined the action and those mutants.
There is another interesting fact, the mods are really nice. There are some that you can add cars, or spawn things.
I think that in Shadow of chernobyl there appeared more artifacts, there is a bit harder to find them.
Also it was faster in SoC (the fights and so)
Now I would liek to finnish it and wait for Oblivion lost, so I can play a faction war after finnshing it.