Which mod should I pick?

Now before I start I did create a thread asking which game to play, I went with Clear Sky and downloaded all the patchs and it wasn't buggy, it just wasn't as good as SoC (And those NPC's with there pin point f*cking grenades!), anyway I have to decide between two complete conversion mods for SoC and I would like some help choosing them from people who have tried both or one of the two. I would really appreciate it if you could tell me which one I should chose and why and here is a link to both mods, thank you for any responses.Priboi Story:Â http://stalker.filefront.com/file/PRIBOI_STORY;93263Oblivion Lost:Â http://stalker.filefront.com/file/Oblivion_Lost_22_for_1005;93039