A camera with 3 CCD's facilitates accurate color reception, and low lux ratings, i.e. "1 lux" represents better low light performance, with the exception of consumer models, which skew lux ratings with the inclusion of automatic gain.
There are only a few consumer/low end prosumer models that employ 3 CCD's anyway, and they're all made by Panasonic. If you were to consider one of these models, the recently announced GS400 is a pretty nice consumer/low end prosumer model priced less than 1500.
Whereas, the rest of the cameras I mention below are all fierce competitors in the prosumer market, priced between 2500 and 5000.
Of course, there are other factors to take into consideration that set these cameras apart from one another, like frame rate adjustability, cine/gamma/matrix settings, optical performance, sound quality, type of media, etc. But, I just listed the main cameras that have good color reception and low light performance...
One of the better prosumer 3 chip models offering clean and accurate color reception is Panasonic's AG-DVX100a, employing a new prism that they claim facilitates a higher quality of color to each sensor. I believe the DVX100a's lux rating is at 4.
Canon's XL1/XL2 and GL2 also have 3 sensors, using a professional L Series fluorite lens, facilitating a higher degree of color accuracy. The XL1 has a 2 lux rating, the XL2 has a 5 lux rating, and the GL2 has a 4 lux rating.
Sony's PD170 also has 3 sensors, but beats all of the models listed above in terms of low light performance with a 1 lux rating.
The VX2100 is also a 3 CCD camcorder rated at 1 lux.