I decided to start reading the Greeks this year. I'm so happy I decided to. Not only did I thoroughly enjoy these works, I felt like I learned a lot about history, culture, myth, and the human condition in the process. I was challenged and felt like I grew.
My favorite book (as well as the longest) was Herodotus' "Histories". The Landmark Edition made it all the more enjoyable to read with its notes and maps. At times I felt like a kid cosplaying as Indiana Jones, trying to wrap my mind around all of the information Herodotus presented. I absolutely loved the experience of reading this book for the first time.
My least favorite was the Iliad. As much as I love lists of ships and chapters upon chapters of random side characters being killed... I just found it to be kind of a slog. The Odyssey was significantly more enjoyable.
The hardest was Thucydides. I struggled to get a feel for his pacing and his prose. I think my average pace with him for the first half was about 10 pages per hour. Thank god for footnotes and Google. But by the end of his book, I did come to appreciate him, and I hold the speeches and dialogues in incredibly high esteem. I can see why Pericles' Funeral Speech is so revered, among others.