The John Deere Gators, all of them, are made at Horicon Works in Horicon, Wisconsin. The quality control there and attention to detail is great. The Chery engine, though made in China, is an automotive level engine. This means it is built and meant for a longer, harder service life than a gasoline power equipment engine. Though Kawasaki for example makes a fine equipment engine, the Chery is a step above in both performance a durability (by design intent). The John Deere bench seat is narrow. It is much more narrow that a Polaris bench seat. The John Deere is really meant for two people riding in comfort and perhaps a cooler or gear stuck in the middle. I have six year old twins, and with me driving and a center seat belt, added by me, my children and I can sit three abreast. We could not do that with three adults unless they were very small. As for the HPX consideration, I view that as purchasing two generation-old technology and manufacture for a price not too distant from the price of a new XUV. They have less power, less features and do not run as well. They also resale poorly in my area, much like a blue Mitsubishi (so I am told). The XUV 620i is anemic to say the least and would, in my opinion, is only good for working in low range, and doing usual tasks on flatter terrain. My experience is they are good machines just like the others, just have such low power relative to their weight they get left behind by the other XUV choices and do not cost that much less when dealing. The diesel Gator (I have had one, so I feel I can generate an opinion) is a torque monster and really good for work or slower speed play. The engine is durable and last a long time but it does not have the power to pull steep hills, maintain speed when climbing steep long runs or with a load. It will move almost anything, just not very fast. The Gator 825i will (literally) run circles around either the 620i or the 855d. One thing to bear in mind is that top speed, while fun to talk about, is not the real finding here. The 825 has more power EVERYWHERE. It accelerates better, loaded or unloaded, it pulls better, such as with a trailer or rear attachment, handles hills better, it plows snow better (and also better than a Ranger or RTV), and plain will outwork the diesel or lower powered gas. I could put a governor on my 825 to 30 mph max, and it would STILL be worth buying over the other XUV's and certainly over a dated HPX (to those with them already--I am speaking as a new purchase). Hope this helps with some of the question about point of manufacture, etc. I also would say if purchasing a John Deere Gator, one really needs to think twice before going away from an 825i, unless the budget just does not allow it. I love mine, more everyday I use it, but I still miss the ergonomics of the Ranger. Adding the Power Steering to the Gator helped make it a lot like the EPS Polaris though in a meaningful way.
John M