I have 3 Multiscan 420GS 19 inch monitors.
For a year or so, I drove them at 1600x1200@75 with both Mac and PC computers. That res is just a tick too high for these monitors, there's some crawl and wiggle. I now drive them at 1280x960 and they look much better. Obviously useable at 1600x1200 (I did for a year+), but I'm leaving them at 1280 from now on.
So, about new monitors. I see 4 in the range. Prices approximate.
19" Sony G420S ~ $440
21" Sony E500 ~ $570
21" Sony G520 ~$750
The last five years I've used a price point around $600-$650 for new monitors, starting with the 17" Sony 200sx many years ago- still inuse with it's 9500 G3/400.
Anyway, this means I can consider 21" monitors, finally.
Will the E500 drive 1600x1200@75 very well? It's rated at 2048x1536, so presumably 1600 would be well within range.
But the G520 is $200 more. Is there a known qualitative difference of some sort. Would seem so. I'd pay for the G520 if they are decidedly better monitors.