I suggest you rent for a year or two. The flip up kind look great, but you're really never going to lift wood 3-4 ft to split it horizontal. The vertical seems nice, but can be a bear to manhandle in place. Those
I have seen have the pump kinda hangin out the bottom. No good in the woods. I have 4 splitters, 1 the screw type. Avoid those. My old Agway will split anything with 2 or 3 hits. A "fast return valve" with auto stop is REALLY NICE. Adjustable wedge is very nice so you can half, quarter etc. Horizontal stroke, low to the ground is what I have found to work best. You can roll the big section up on easier than to feed a verticle shaft. If you can mount your shaft on the side , even better.