While I was messing around with the advanced era start options, I noticed that the Classical era seems like a nice sweet spot. The nicest thing about it is that it essentially adds a whole lot of possible options to the choices in the first turns. There are a lot of techs to choose from at the start of the Classical era. All the ancient era wonders are unlocked and available. It basically gives you more of a chance that you can choose to do something no one else is doing. Also, simply having more choices to weigh makes for more interesting decisions. You start with a couple of spearmen and a worker, which is particularly nice if you like the longer time settings. It gives you more to do immediately.