It all depends on where and how you're going to use your boat. If it's inland and short hops you'll be very happy with the 8.1's and so will any prospective buyers in the future in your area. If you're on the coast and in salt water then the appeal of the boat will plummet. I'm on one of the largest freshwater lakes in Texas and have a good friend who is a Sea Ray salesman. He's says that 90% of the 420's he sold (so I have to assume the same is true for the 410's) where gassers. People here just don't value the long range capability of the diesel's as they do on open water. Put me on the coast and I wouldn't select my boat again, but with how we boat I'm thrilled with it.