We have some NEC multisync LCD1970NX at the office and they are nice to use, seem clear and sharp, (i havent compared them to a apple display) but they are buit well, take up minimal space etc and are fully adjustable.
they accept both DVI and analogue ( and i think they will accept them both at the same time as there is a button on the front to switch inputs - which would mean being able to run two machines on one monitor! ( eg a pc and a mac)