I voted Penny Lane. However I cannot say I like it better, they're just different. I don't know why but it always seems a very sad song to me. I just love the lyrics - words after words, simple and usually not used together (summertime and November poppies, blue suburban skies and rain) that creates constantly changing and at the same time everlasting picture in my mind. There's something fresh, something cozy and something nostalgic (I suppose because of Paul's voice). Add to it the bass rhythm that is sooo serious yet jumping, the melodic piano, filling the atmosphere with sounds, and the tiny insertion of the piccolo trumpet.
Just now Strawberry fields for me is a song that makes you sit in a corner and tells you truths about life, universe and everything else with John's voice saying "down" - so grave :X