Love: Its beautiful, smooth, and solid/never crashes. Camera is so nice!
Irking: Lacking features that I am used to with Android i.e. notification light, pretty data usage graphs, avatars next to emails, ability to create groups of contacts, bigger contact photos used in interface, photos next to contact, face unlock, place icons on homescreen in any open space (iphone forces app icons to be one after the other), prettier battery usage graphs, notes app is more simple and clean on android, gmail app that is updated daily and looks nice, panoramic photos that are better stitched (feels like Android is easier to take well stitched panos), feeling of knowing future iphone will have 2GB of ram while android had 2GB, ...