Unless you're planning to go in a completely different direction with your next choice I think it might be difficult to choose a replacement. I don't know what could give a similar overall ownership experience. You can get a different pleasure from owning a different type of car but I don't know what matches the Spyder in its space. I think for me the Spyder showed me that there are great Porsche cars and then there are those that push the envelope that bit further. For me I think i'd only stick to 'top of the tree' type models from now on as i'm then not thinking about the next model up. For me the Spyder tops the 987 tree. 911 is a bit different as there a various tops of the tree. That said, it will be interesting to see where Porsche goes with the 981 and how long the GTS will be the halo model. I have a feeling that the GTS is a transient step and there is more to come very soon - 4 pot turbo or not. Looking at the present, yes it tops the S, but only just, given the way the options are stacked up. But looking forwards to possibly what's coming, maybe it isn't worth stretching to it over an S in 981 gen 1 when there could be a hotter one or gen 2 soon...