@xvsanx
The ENBs I find work the best/look the coolest are:
-Midhrastic's enb found here:
http://fallout3.nexusmods.com/mods/18107-return0x000's modified FNV TV ENB found earlier in this thread.
And
-Realistic Mojave enb found here:
http://newvegas.nexusmods.com/mods/47632 <------- Please note, that this last one (the Realistic Mojave enb) goes best with the .116 version of enhanced shaders. Especially when being used in conjunction with the Project reality version. It will look mediocre at best with .118.
I would also use a weather mod as well, specifically Project Reality, as I find that it does not interfere with the above enbs, and it really spices up the mood of the game. Nevada skies goes terrible with all of them, so I would not recommend it.
Here is Project Reality:
http://newvegas.nexusmods.com/mods/42180