NO, ride quality is not debatable. Ride improved tremendously around 2000 with cad/cam drawings and tank testing and so forth throughout the industry. I've run several HUNDRED classic Hatteras MY's (say prior to 1988), great in a head sea, nothing you want to be in, in a beam sea or following sea. Same with others in that era. If a Detroit Diesel isn't leaking oil, it's simply because it is out of oil. You're not understanding, there are some construction methods that you just cannot fix on the older boats. Such as no sealed bilges.....Detroit diesel oil in the bilge water, exhaust smell, sewage, and smell from the engine room permeates through the entire boat, because the bilge water runs through the entire boat. It's a monthly battle of trying to keep the bilges clean and no smell. Newer boats are compartmentalized in regards to the bulkheads and what gets spilled in the engine room for example, does not wash into the living quarters...… If I deliver a 1980's boat, after 3 days of just running and even though you don't smell anything inside the boat, (especially with split engine rooms) all of your clothes, even the ones in your suitcase.....will smell like a Detroit diesel engine room. And, when you're done rehabbing one of these old boats, and dumping $100k into it and a years worth of blood, sweat, and tears, it will hardly be worth more than you paid for it......that's where the rub is. They've gotten too old and too old looking for people to want to do it anymore. Right now the yacht industry is at a peak, most good builders have orders out to 1-2 years. There is a real shortage of any decent yacht for sale from 2000 or newer. That is what people want, heads that flush properly, electronic diesels that start right away, don't smoke out the marina on start up, and you can have a conversation when you're underway. Boats that don't smell like sewage/diesel/ or exhaust when you walk in the salon door, modern appliances and technology. Now, you have to understand that most of these 53' MY's and stuff had full time Captains back in the day that kept up on keeping bilges clean and this and that, but at their current price point that's not the case, and it's also not the case for most any 53' MY in the US anymore. So people want yachts that don't have to be babysat or need countless hours spent on maintenance, keeping bilges clean and 8 volt batteries filled with water and stuffing boxes tightened and packed.....and etc. etc.