I'm another DHT Splitter fan, we have the 27 Ton model, it has been very reliable for us. I will add to the list of DHT customers that have been treated above and beyond Expectations. We got one of the last DHT's that had some Bum thread paste, and had some leaking connections, DHT arranged with our local John Deere dealership to have ALL the connections did-assembled cleaned, resealed and reassembled.
While talking to Brad at DHT's CS, about getting the leaks fixed, I mentioned that the only thing that I didn't like about our unit, and ALL the brands in that class, is the Damned hub mounted wheels, rather than a decent lug mounted wheel, I asked him "Where do I even get one of those for a spare, as we transport ours a LOT( it piggybacks in the 6x12 tandem trailer outbound, rolls home on it's own wheels after a good day of cutting, often 50 miles one way), Brad said "I can take care of that" and sent me a complete tire/wheel loaded with bearings, as a "Warranty Issue" even covered shipping. My experience with DHT will keep me as a customer, if I ever need to replace ours, or recommend one to someone else.
I Like the ram mounted wedge, myself, and I WOULDN'T buy a splitter that wouldn't go vertical, you don't have to use it, but we sure use it a lot, my Wife Prefers splitting vertically, even on some smaller stuff that I would split horizontal myself. We often are splitting wood in the 30" range to vertical is a godsend. we actually prefer logs 20"+, stuff that many others avoid, lots more for us.
I have thought about the 4 way wedges, but with the big wood we target, I don't think they wood work very well, on smaller stuff, that isn't a lot taller than the wedge, I can see quartering rounds would speed things up, but on larger rounds, I suspect that I would end up with a bunch of funky pieces.
I like my 27 ton DHT, it is about as heavy as I would want to pull up the ramp gate into the big trailer, but I can still manage it okay, and the 196cc Koehler engine has been very reliable, starts on the first pull, even cold almost every time.
I would recommend or buy another DHT without hesitation,
Doug