The exact model I got after testing some was a Belmonte 5050BK. Got it for around $32. I originally tested one that cost more from Guitar Center, but the protective rubber jointing made if wobbley and the music rack would slide down.

The one I got, all pro band people in my area use. It is steady and secure for a laptop.

http://www.musicity.com/viewitem.cfm/item_id/1686

[This message has been edited by Scott Langholff (edited 08-31-2008).]