930 3.3 Turbo or 993 Turbo ?

Hello, I have to buy a Porsche Turbo. I have looked at various models, but I haven’t driven one yet. In question comes for me either the Porsche 930 Turbo with the 3.3 liter engine or the 993 Turbo. So I want to invest between 50-60tsd €. Now my questions to the specis here: 1. Is there a preference in terms of value retention or even value increase? 2. Is there any older Turbo years that are to be preferred? 3. Are there things for both, which absolutely should be taken care of when buying? 4. Which Turbo is more fun? (I know, drive and test myself, but I lack a little time and vl. there is someone of the two Turbos ) Finally a 930 Turbo, which I like well:http://suchen.mobile.de/…/showDetails.html?… What do you think about it? Thank you for your answers.