I bought a 753DF about 2 weeks ago, but ended up returning it and going with a viewsonic aperture grill flatscreen (A75f). The 753DF had some great qualities: the screen image (text, etc.) was extremely sharp and crisp. Also, the screen geometry was excellent. The flat screen is very nice, and the backside of the monitor seemed rather small for a 17" screen, which is fine with me. The ONLY issue I had with it was the color saturation. After seeing an aperture grill monitor (trinitron or diamondtron), I was hooked on the vibrant colors. The old rule of thumb is.. if you work with photos and like vibrant, rich colors, go with an aperture grill. If you need razor sharp images..go with a shadow mask tube.
Now, I think there are shadow mask monitors out there with better colors than the 753DF, but they may cost you more. I think Samsung makes a nicer shadow mask than the 753DF. They also make an excellent aperture grille tube. (700NF? I could be wrong on this)
Anyway, that was my take on the 753DF. Great crispness and geometry, but the colors are richer on my viewsonic diamondtron (yeah it's a diamondtron.. i saw the mitsubishi diamondstar on the tube). I guess I'm a sucker for rich colors. Good luck!