Mozart vs. Haydn Symphonies

I've been listening to Mozart's Symphonies from No. 35-41 and Haydn's Symphonies from No. 101-104 + 94. I admit Mozart's symphonies are prettier, have catchier tune, made me happy and just perfect. But, there's this sophisticated feeling that one gets when listening to Haydn. His symphonies do not have the immediate tune that running in your head after you listen to them (bar the last movement of the 104, I often hummed to it when I'm alone walking on the street), but you will feel that at the end of each of his symphony, Haydn's symphonies are really well constructed hence sophisticated. I don't know how to describe it, but one just have to listen to say Haydn's 102 and contrast it with Mozart's say, 35 or 38. People should really give Haydn more listening. He is undeservedly got low count listening in Last.fm considering he is called 'father of the symphony and string quartet'.

Overall the last symphonies of both composer are my favourite symphonies of them. How can you top the last movement of Jupiter or the bounciness of the finale of the London symphonies? I know I'll never get tired listening to them cause they always make me so happy :)