Seems to be an good range of options when it comes to "realistic" style WWII FPS games atm.
Im looking to get either Hell Let Loose or Post Scriptum, Hell Let Loose has seen an big bump in players since the latest update it seems, i think i might buy that one tonite when i get off work. Might get Post Scriptum at an later point aswell.
Found a couple of what it seems unbiased pretty recent comparison videos of them, but they were made before the latest Hell Let Loose update that apparantly was quite big.
Hell Let Loose 24h player peak : 5,174
Post Scriptum 24h player peak : 1,342
I think those numbers are the deciding factor for me atm, untill Post Scriptum comes out with an big update.