what lens do you use for macro? whats your fav lens.looking

[schmintan]

i have been browsing the web for a macro lens /filter for my panasonic lumix dmc-fz7. there are so many on offer.
i want to get one thats a little versatile, that will let me take pics of a whole insect, or just its head if need be.
what do you use, what do you find best, where did you get it and how much did it cost. you dont have to have a panasonic.
any camera , as i can get an adapter to fit to the front of my camera to attach the lens.