being a 911 hardcore owner and Porsche purist I would say go for a manual or PDK and steer away from any tip-ironic BS 
rear wheel drive always good to drive also, more smiles per gallon 
Also timing is important because solid 911 cars prices go up all the time just like bitcoin, 911 993 air-cooled from the 90s being great example for this
https://www.dupontregistry.com/autos/results/porsche/911/1995:1998