If you are going the middle route and dont mind the engine...you seem fairly unpicky with it being an 8,10 or 12...then the obvious answer has to be 720. It is simply a crazy amount of car for the money.
1, Drive the ones that you are interested in, and you’ll know 2. Buying a (any) new car I have always thought is for those who can very easily afford the depreciation 3. An Aventador is an event. But get a >2013 car.
as an event/weekend car I would take an Aventador. You can always get a McLaren as a second car later down the road. If going Ferrari, I would buy a Scuderia or a F12 in that price bracket