I absolutely LOVE McGann’s interior. The gothic library feel just makes it feel so much like a home to the doctor rather than just a ship. And it’s also the biggest the TARDIS has been so far.
A close runner up would be the 12th doctor’s
I want to also mention the 4th doctors secondary control room, except I wish it had a better console.
I also kinda like the unused season 27 TARDIS with the console suspended from the ceiling.