Mac Mini - Go with DVI
I purchased a Mac Mini 1.25 and a Benq FP931 19" LCD. I used the DVI-to-VGA adapter that Apple included and the image quality was fine ... sort of. It appeared perfect dead-on, but if I slightly moved to the side or looked at a particular solid color, the image had thousands of very tiny horitonal lines that were moving incredibly fast left to right. After 20 minutes, your eyes would naturally start to pickup the subtle movement on the screen. Considering I'm at a computer 9+ hours a day, this was very bad.
After ruling out the LCD by troubleshooting with BenQ on an HP tower and playing with the settings, I phoned Apple. The absolutely most rude and snarky woman refused to tell me which third-party monitors were support by the Mac Mini (wtf!!?) and said I had to connect the computer to an Apple display to determine if it was the Mini. I pointed out that no where on Mac Mini's hardware description, nor the FAQ's did it mention that not all "third party" VGA and DVI monitors would be supported by the computer. She referred me to page 32 of the owner's manual (apparently potential buyers are expected to search out, download and read the 105 page book.) It says, "For information about compatibillty with third party displays, see the documentationthat came with the display or contact the display's manufacturer." THANK GOD that's not a vague statement - it clearly says that despite the advertising on the site, having a DVI or VGA monitor does not mean it'll work with a Mac Mini.
The conversation with this woman was awful. At one point, I ended up saying, "Why are you being so short and rude to me? You've been short with me as soon as we starting talking. I'm at a 5/10 on this call and you're at an 11/10. You're raised your voice to me several times and you're trying to get me to respond - you're trying to get me mad. Have I somehow 'wronged' you today?"
After dropping the dead weight of that CSR and realizing that my LCD has both DVI and VGA, I decided to try a DVI connection. I picked up a $40 DVI cord and connected it - the image is stunning. There's not only a huge improvement in brightness, text, color. etc., but the lines are gone.
Hope this helps someone out there. I also hope that my call was recorded for "training and quality purposes."