That would be Geoff Johns' Green Lantern, starting with Sinestro Corps War. All naturally because of the magnificent first issue of that storyline.
This was bang in the middle of GJ's golden period and it showcased his greatest strengths, writing sophisticated superhero work from plots which a fan would dream up, but making sure it is not immature or in the realms of fan-fiction. This was also before Johns' penchant for gory killings became completely wanton. Have a look at the issue's cliffhanger which set up the storyline, it still makes DC fanboys go squeal.