Big square baler

Hey guys, been looking at going to baling big squares with the recent purchase/property given to me. I'm know going to be harvesting 400 plus acres of hay fields. What are you guys using for your big balers and what are you pulling it with? Not to worried about a money problem just looking for a good used baler and a tractor with more then enough hp to pull it.

Thanks in advance guys

Big square baler