WinTV, inDTube - color quality?

I used a WinTV (Hauppage) pci tuner - you can't schedule & record but can record in real time. Otherwise it is perfect.

So I changed it to
eVGA inDTube USB 2.0 ATSC/NTSC Portable TV Tuner w/DVR & MCE Compatibility
http://www.amazon.com/eVGA-inDTub...212&sr=8-1

I checked reviews and people have had issues with software - with Win 7 or likely with newer TV Enhance sw, problems seems to have gone away. So I installed. Records in mpg.

It works fine but the color quality is not rich - I have recorded clips from WinTV - looks more natural.

I use it on Win XP Pro, AMD 4200+. ASUS M3N78-VM. ALso use a GeForce 7300GS video card.

WinTV was on a ECS, P4 system - but recorded clip, avi file, was played on the AMD system.

Is there any fix?

Do you recommend another video card?

Nero Home can also play/record TV - not sure if it will improve color quality.