If you're intending to target < IE7 then inline-block only works on elements where the default display type is inline. It's less of an issue now of course, but

If you're intending to target < IE7 then inline-block only works on elements where the default display type is inline. It's less of an issue now of course, but despite float having certain issues (example: having to use a clear:both with frequency) it's the preferred route. Then again, you might just want to look at a grid system which will handle all the quirks for you.