first off, I used to have a syncmaster. it was an excellent monitor for 4 years, then it got rather dim on me. However, I let it sit for a few months and it is fine now. The color was great, and it was crisp and detailed.
As stated before, never trust an image on an in-store display. They are usually tuned to be untra bright with a lot of contrast.
The one thing that you will notice is the black level. This is the seperating factor between television sets. CRT gives the deepest color definition out of LCD, plasma, and frontal projection. You will notice the that in comparison, the LCD will be a little pastel-ish. You can tune the hue/saturation in to be just as good as the CRT, but it will take some fiddling with.
Im am not sayign that you shouldnt go with the LCD. They are exceptional monitors and with the way the cost is coming down, its hard to beat. You most likely wont notice the difference unless the two monitors are next to each other. I am just giving you something to look out for.