
I have the Halogen spot lights in my kitchen, they are great as you can move the individual lights around to light up different areas. I do also have lights under units! But that is only because my OH is an electrician!!! But you can get under unit lights that just plug into a normal socket instead of tracing wires through walls etc:
I also like the halogen lights that sit in your sealing, like spot lights I have those in my hall way as it used to be quiet dark being a narrow space, but it lights up brilliantly.
Sorry I have not been much help but I would go for the Halogen rack, although bulbs are a bit expensive it is worth it!!