Hello Fanch, How are you.
I done 10 000 kms with a 996 C2 3.6l 320 HP and 6000 with Maserati 4200 GT Camborocorsa. You know my opinion but i repeat for the others.
Acceleration : For me is the same. Maybe the Maserati is quicker at low rpms but it's quite the same.
Motor : The V8 of the Maserati is splendid. The sounds is fantastic. VERY VERY impressive and beautiful. I never use the radio in Board !
The flat is too shy but i haven't sport exhaust option.
Gearbox : 6 speed manual of the porsche was fantastic but cambiocorsa is amazing. Fast, it made double clutch it self and it is sansational.
Brake : Porsche is the best in this domain but maserati have good brake too. Very endurant (fanch traduit pour moi

), nothing to compare with bmw M3 for example.
On drive :
The problem of the 996 C2 is the not totaly remove PSM and no LSD. I have the chance to choose one with no PSM but the drive is more funny with the 4200 GT.
The Porsche is more agile in entry (rear motor) but he didn't turn like the 4200 with accelerator.
Fiability : I didn't make lot of kms with this cars but i want to say something :
I had two problems with the 996 (Daschboard) and no one with the 4200. The finition, the 'joins' around the window was not perfect and the commodo is cheap in the 996.
The finition are almost parfect in the Maserati.
In Conclusion : Both car are fabulous, but the sensation to drive is better in the 4200. I don't know the time at the nurburing or others, but drive the Maserati is something emotive. 996 is perfect but too shy in my opignion.