First of all there is no single solution to fit all needs. For example: my property has been logged over the years such that most all of the hardwood is under 14-15 inches in diameter so there are no big heavies that demand a vertical splitter. Some folks might have a lot of big stuff on their land.
Secondly I have a 68HP 4wd tractor that not only is a great material handling machine for moving logs, catching the outfeed splits in bucket, etc. but I'll be darned if I'm going to stack the hours on it to power a splitter when a Honda engine costing 2.5% of the investment will do the job.
Lastly, a good friend of mine had his dad killed by a screw-type splitter. The worst that can reasonably happen in a hydraulic is get your hand caught. There is plenty of danger felling, bucking, etc. - no need to add to the danger inherent in the process.
I've observed that everyone doing this for a while develops a process to suit them and they all vary a bit. I used to palletize everything but found that too time/labor intensive. I now have a 1/2 cord bin that I can load from a remote stack when needed, fork lift to the house and into my walkout basement, then pallet jack over to the stove.
Oh the splitter!
I am in a partnership with one other individual on mine so it's available to me 6 months out of the year which is plenty. It was fabbed 2-3 decades ago by a local welding shop a little before I had bought my 1/2 share. It is based off a really big I-beam sitting on a truck axle with leaf-sprung 15" 8-lug wheels. The cylinder is from an excavator so it is heavy-duty but not so large it is slow with proper choice of hydraulic pump. We wear out engines so the current craigslist special is a Kohler off a riding lawnmower. Maybe the best part is that my share was $150