The vast majority of the wood I cut for the winter is dry and ready to burn. I try to have all the wood I cut for the winter split by Thanksgiving so the wood that still has some moisture will have the winter to dry and if I am still burning wood in May it would be close to ready.
Personally I like splitting wood by hand. It can be a pretty good workout especially if the wood is hard to split. I do see myself getting a gas powered wood splitter at some point, but right now I'm not ready.