I just bought this LCD monitor, and I must say I've very pleased! Excellent quality overall, with high response time (16ms average, max 5ms), DVI, 32-bit colour (16.77 million), and good support.
I was at first trying to buy the Samsung 710T, but in Hong Kong (where I live) that model is not out yet. And the Samsung 172x and 710N all are only 16.2 million colours, which is not what I want. So for what I needed, the Philips 170b5 was the only one that fitted my needs. Thank god it's a great one!
So if you can't find the 710T, this is an excellent alternative, IMO.