tunicate... problem with m4/3 is the sensor is 1/2 of the full frame sensor. Also, the AF is very slow, much slower than DSLR. So it's best for portraits/landscape and travel (due to the small size and zoom).
FYI, i owned a Nikon D90, olympus EP1, LX3 and a few other compacts. Most of the FTS i took is with LX3. for corals, i use my waterproof olympus u600 i think..