[Help] Looking for an awesome FPS

As I said: I'm looking for a nice FPS game because the bestest of the best FPS games aren't always free. Like Call of Duty and so on...

What I really want is something that has got some features related with these ones below:

Gun/Character Customization - Yeah, like Operation 7. But I don't like that game much. Annoying radio voices; Very realistic but weird sprinting; Etc.
Nice environments - I mean... most MMOFPS games have repetitive environments.
Low ammount of hackers - You see a lot of hackers, everywhere. Yeah, I know that this is a hacking forum but I really don't want to hack nor get annoyed by one.
Less lag - I mean... Those epic laggers teleporting and dodging every single bullet...
Modern gaming - No futuristic FPS games please. I might accept your help if you find a old-looking FPS game.
Nice weapons - I don't want to find a FPS game with crazy weapons that have a insane recoil or something.

FPS/TPS games that I've played so far:

Alliance of Valiant Arms (Thinking of going back to it.)
Operation 7
Combat Arms
Call of Duty (CoD; CoD: Modern Warfare; CoD: World at War.)
Counter Strike (CS 1.6; CS: Source; CS: Condition Zero.)
Left 4 Dead (L4D1; L4D2.)
Grand Theft Auto (GTA: Vice City; GTA: San Andreas.)
Medal of Honor: Heroes
America's Army or Tom Clancy’s Rainbow Six (Can't quite remenber which one I've played. I've just played an old Demo. But it sure had crazy glitches...)
Far Cry
Half Life
Turok (T: Dinosaur Hunter; T2: Seeds of Evil; T3: Shadow of Oblivion.)
Soldier Front
GunZ: The Duel
Exteel
Mercenary Wars
Crime Craft
And many more...

If you know some good FPS games, post below. Besides, they don't need to be exactly as it says on my list. Oh, and here's a list if you're indecised in choosing a FPS/TPS game too:
Free Shooters
(I've taken a look over some of those FPS/TPS games but I need some personal help other than looking and downloading each one of those.)