All the reports and tests I read suggest less noise at higher ISO (800+)
with the CMOS.

MC

The following should complicate things real well:

The sensor in the 350D is 22.2 * 14.8 while the sensor in the D50 is 23.7 *
15.6 . Since the 350D costs more than the D50 and since its sensor is
smaller, conclude that CMOS sensors cost more...Oh, but also the 350D is 8.2
megapixels while the D50 is 6.1 megapixels.

Now, the D50 has a sensor 23.7 * 15.6 as a 6.24 megapixel CCD while the D200
has a sensor 23.6 * 15.8 as a 10.92 megapixel CCD.

So don't you really want the D200 ? Oops, it weighs 29.3 ounces without
battery and lens and costs $1700...

Of course the D2X does have a CMOS sensor sized at 23.7 * 15.7 and 12.84
megapixels...And that's 38.4 ounces without battery and lens and a cost of
$4000.

Now the 5D has a sensor 35.8 * 23.9 as a 13.3 megapixel CMOS...and it weighs
28.6 ounces without battery and lens and costs $3300...