which has a swivel monitor which allows you to comfortably pre-view your image from any position (table-top?). Olympus is the pioneer of lifeview (the P&S like image preview like on a compact digicam), which recently has been implemented by nearly all other manufacturers as well. Furthermore, the Olympus has an in-body anti-shock system working with any lens attached.
The Olympus ZD-50mm is a perfect solution, it is regarded as one of the sharpest macro lenses ever made. If you shoot outdoor photos frequently you might like the fact that Olympus water sealed all its lense from mid-range level upwards. If you need more working distance (e.g. to image insects), you can also opt for the excellent 105mm Sigma macro.
Please note that on the Olympus, because of the smaller sensor size, you have already more working distance at any given focal length than with either a full frame or the so called APS-C sized sensor camera.
A similar system of a tiltable monitor has very recently been presented by Sony as well. And: their 100mm macro is also highly praised.
Good luck!
Magnus
