I have pretty much all of the parts selected for my new i7 920 build but the monitor! I have narrowed it down to these four and any advice, comments would be appreciated! My budget is between 200-300 dollars
You did not specify the purpose of your system.
For myself I would've choose S2409W from that list. I like bigger pixel pitch and I prefer to use Dell monitors.
16:9 is standard wide screen aspect ratio; however the 2048 x 1152 resolution may not be an available option for some games - more likely they will use 1920x1080.