I wouldn't advise the IKEA NON lights... Depending on your light color preferences, there IS an
IKEA LED based lightthat has a slight bluish tint, but it's MUCH whiter than others that I've seen. They aren't as bright as Halogen , but they also use a TINY tinyfraction of the power, are a LOT cooler, smaller and easier to mount. As an added benefit the power cord has a regular plug rather than a big honkin transformer. I like them. Susan's a bit iffy on the color I think... I'm mainly interested in the puck style lights, but the also come in an interconnectable "bar" configuration that might work well for multi shelf cabinets... Take a look at the linked thread, I've got a lot of the info on them there...
James