I'd rent one but neither of my vehicles has a trailer hitch.
I split quite a bit yesterday and paid for it last night. Splitting wood is like shoveling - there's no exercise that can prepare you for it, other than doing it. I looked out at what has to be split (not much left) and most people would laugh at me for even thinking of buying a splitter. Gotta put my Big Boy pants on and just work at it. I can use the chainsaw on the pieces that are too big to split.