What is your favorite Mozart symphony?

I feel Nos. 40 and 41 are Mozart's masterpieces, but two of my favorites are:

The "lighthearted" Symphony No.24 in B flat major and
Karajan's Symphony No. 35 in D major, "Haffner."
I usually prefer Mozart performed by a small orchestra, but I like Karajan's touch on this one.

35, 36, 39, 40, 41.

Although I prefer his operas, concerti and particularly love his string quintets. I have these on vinyl by The GRUMIAUX TRIO plus two players on a nice sounding Philips release.

His clarinet concerto--yes!

My two favorites are the Haffner #35, and the Jupiter #41. Probably the most recognizable is the G Minor 40th, his only symphony in a minor key I believe which gives it a different feel from the rest. Agree with Jetxexpro they're all great from the 35th - 41st. Mozart's Symphonies are often overshadowed by Beethoven's however the last movement of the Jupiter is one of the most uplifting pieces of music I've ever heard. You have to imagine Beethoven was greatly inspired to follow-up in the manner he did as was Mozart inspired by Bach to write it and a great example of how music builds upon what came before.

Neville Marriner and the Academy of St Martins in the Field are excellent performances of these works and my favorite of the one's I have. I too would like some other recommendations, always looking for great performances of masterworks.