I've owned a few (Manbug ZDP-189, Manbug G-10 Ladybug ZDP-189, SE Ladybug Salt, SE Ladybug Salt Hawkbill) and still own most. You can't go wrong with either, they're very similar.
That said, I like the Manbug a little more, for the belly, a better tip and FFG. The advantage to the Ladybug is that you can get H1 if you need rust resistance (I have a SE Ladybug Salt on my motorcycle key) although the Manbug has the G-10 model which is very nice for a knife its size. It really just depends on your needs/wants, but for most people I would recommend either the ZDP-189 Manbug or a Ladybug Salt, depending on your needs (The ZDP Ladybug is also FFG).