red oak
Minister of Fire
If I had easy access to popular, I'd split it now and use it for next fall - it should be dry by then. In my climate I could burn poplar probably into December, then that's that much less oak I have to burn. As others have mentioned the splitting generally is easy and it dries pretty fast. I wouldn't pay for it or go out of my way to get it, but if it's easy and free it'd be hard to turn down.