I'm not a lighting expert but I'll help bump this along. Are you using the lighting for task or for general illumination? Do you have other lighting in the kitchen (under the cabinet, etc.)?

I can't tell what wattage of bulbs go into these fixtures but is your lighting level OK with your old fixture or do you need more light in better locations?

Have you considered any other fixtures besides IKEA? There's a lot of track lighting options out there.