We bought two Samsung 2343BW monitors early this year (or late last) for our business and have been very pleased with them.
They are 23" with a resolution of 2048x1152 and cost about £140 IIRC. They work great with Ubuntu as that is all we use in the office :-) Al -- The Open Learning Centre http://www.theopenlearningcentre.com -- ubuntu-uk@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-uk https://wiki.ubuntu.com/UKTeam/
