i got the acer 19 on sale to see what the newer lcd's look like... i'm a crt kind of guy... the 19 and 17 do the same native res, 1280/1024... my take is that the picture might look a bit better on a 17 inch, due to the dot pitch being bigger on the 19... the bigger pitch makes the picture a little more blocky...
but for us old guys the large print edition wins out over having the prettiest picture...