I've been searching online for a while on this and found more than one ways to calibrate a display for colors. All of the displays I use are LCDs, some laptops and some desktops. Operating systems in use are Windows 7, XP and Linux (Fedora). Screen sizes are from 12" to 24". What do you guys use or recommend? EDIT: I would like to get something that works and is not overpriced per your standards.