My Two cents:
Don't rule out Tractor Supply Splitters (County Line). I bought their 25ton splitter last May. Back then it was slim pickings on everything. I looked at Lowes and Home Depot offerings also. I chose the County Line / Tractor Supply version over the Champion offering. To me, the Tractor Supply was a bit heavier duty, stronger beam, and its' splitting height is taller than the Champion. The Champion @ HD on display was rusting at the welds....not a big deal, but to me reflected on quality. The Tractor Supply's welds even looked stronger and more complete. (Yes, they are mostly Chinese anymore).
Mine has the Kohler SH Series engine, so far so good. Changed the engine oil @ 5 hours, some expected metal break in particles etc. Just changed it again yesterday, oil clean@ less than 100 total hours. Also, as recommended, changed the hydraulic oil filter @ 25 hours. I cut it open, no metal particles inside.
This splitter has split everything thrown at it with ease. I believe I paid $1150, and now they are $1550. I made my own log catcher as the store bought wasn't big / strong / quality enough.
Whichever you do purchase, look how the unit is stored on their lot. It's all over the internet that these engines will take in rainwater if not covered, rusting the internals of the motor, carb and gas tank. Not a good way to start out. I was lucky, as mine was crated and wrapped.
Hope this helps.