Chicago server: My Opinion as westcoast player (no raging/flaming promise)
I live in the west coast (California) and I can feel the lag spikes but after uninstalling and reinstalling the lag issue was kinda fixed. My ping averages around 70-80 (AT&t) but every so often I get spikes ranging 200-500 and the game freezes. The server move was good for the overall ping but I think people in the west coast (Hawaii and Alaska especially, their ping is stupid high) will suffer in lag for a good while till RIOT figures out a way to fix it. So people in the west, please calm down and perhaps find ways to lower your ping by turning off background apps when not in use (windows update, skype, any internet browsers, and etc.) and lower your game graphics down to very low (gameplay is more important than HD graphics).
RIOT your doing a good job and I hope you guys find a way (and cheap way I guess since making a new server is expensive) to fix the lag issues
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rework plz )