I'm not familiar with Homeric commentaries, but have two comments. If Harold Bloom is the Harold Bloom of Princeton, I would stay away for two reasons: his English scholarship leaves something to be desired, and I'm under the impression that he has little to no Greek. The Wace and Stubbings Companion to Homer is a wonderful book, but it is not a commentary. It is a collection of studies on Homeric subjects such as geography, history, culture, food and clothing, technology, and even a helpful section on Homeric Grammar. I found it enjoyable and scholarly, but perhaps someone else would know if it is the most current?