During a 4 hour walk one weekend I broke out my Macro lens. Next to my 70-300mm - the Macro is my favorite. A LOT of my macro pics are taken with the 70-300mm. Most of the dragonfly, damselfly and butterfly pics are with that lens. I just can't get close enough with the 105mm Macro to those creatures without them flying away. However, the ladybugs don't seem to mind if you put a lens right up next to them :)
More of my Ladybugs - HERE