S.T.A.L.K.E.R.

[Flamebatter90]

I would recommend the Autumn Aurora 2 for Shadow of Chernobyl, liked it a lot more than Complete. It also changes the combat, so you can hit and kill things easier. Though, it also makes other humans hit and kill you easier.

For Call of Pripyat, definitely go with Misery 2.1.1., it's hard but the sense of achievement is greatly increased when you get something done.