I'm looking for something new to read, I've been recommended Sinestro Corps here before but I wanted to know if I should read Blackest Night or Brightest Day first? Is there a particular order to this events or is Sinestro Corps a stand alone?

My second question is about Infinite, Identity and Final Crisis. Is there a particular order and if so, is it necessary? Also, are they good reads? I hear Identity was unnecessarily dark and I think Infinite was not good storytelling. I heard these awhile back but I know they weren't shed under a good light.