I shoot 35MM negative film for drum scans to large .tif files, Photoshoppe 5.5 retouch, then print 6"X9" or larger prints on injet printer. I narrowed my film choices to these 2 shown with manufacturer's descriptions:

Kodak ASA 400 High Definition, finest grain ASA 400
Kodak ASA 400 Ultra Colour, fine grain and extra punch of colour

Will the Ultra Colour really give me better colour than the High Def?
Will the High Def really give me better def than the Ultra Colour?