We have been multisampling a really lively, sweet and analog Rev 3.2 Prophet 5 which has been loaded with the 40 original patches. Also included: A truckload of other patches, such as more NNXT patches, Rex files and Combinator patches.
But the essence here is the raw. lively, or quite sick, original Prophet 5, slightly or actually very detuned at times, but real. If you want even more real, you can get a vintage machine. For several hundred times more, of course.