not 100% sure about MAC connectivity, but might be worth checking with the manufacturers to be sure. The Belinea 102035W uses a P-MVA panel from AU Optronics. It offers pretty good colour reproduction but you will need to do some calibration to get some better accuracy, as out of the box colours are a little off. Do you have access to colorimeters or calibration hardware at all? Would come in handy
the Philips 200W6CS is a tricky one. I have not seen colour analysis of the new 8ms version on any hadrware sites yet. As far as the panel technology being used, I've heard things suggesting it could be S-IPS, P-MVA or even TN Film! It's so hard to tell and Philips don't seem to know either! I would be inclined to think it was an updated version of the 16ms S-IPS and should therefore offer good colour reproduction. Without colour gamut graphs and deltaE graphs, it's hard to say how good it is, but user reports are positive.
Both should offer some pretty decent colour reproduction for general graphics use (sounds like it's more general than professional, picky work). The Viewsonic VX2025WM is using the same panel as the Belinea as well, but is more accurately calibrated out of the box. It may mean that you get better colour reproduction qualities if you didn't have access to decent calibration tools. The NEC LCD20WGX2 is also very good, using AS-IPS panel technology. Very good colour accuracy there as well