Sony's A580 and A55/A33 are excellent for macros, with extremely high resolution (which benefits macro's especially), tiltable LCD and live view - it will certainly be a more pleasant macro shooting experience. Photographing grandchildren could also benefit with the faster AF of the newer Sony's. If video is an important feature to you, a strong tilt towards the A55/33. Look into the interface of an EVF as opposed to an OVF, as there are benefits and drawbacks. The A55/33 use EVF instead of OVF.