Love the Porsche, love the Patek Philippe 96 references...
Definitely a hard decision. They both stem from a tradition that remain true to the core root of both companies. And both represent their respective firms very well.
There are a lot of dislikes I have with the Porsche, when you open up the engine bay, you can see the intake plenum is made of plastic and this plastic actually deforms at high RPMs when there is a lot of airflow that makes it narrower which means less air goes into the engine causing a small power loss. Wished Porsche had a metal throttle body so this wouldn't be the case, there are some aftermarket intake plenums that are made of steel, but shouldn't a Porsche be perfect from the factory?
On the other hand, the Patek Philippe comes already quite perfect from the factory. Superb finishing, etc. I just wished that all Patek Philippe watches including the time only Calatrava models were made by one individual, one at a time like Lange watches and many independent watches.