I've enjoyed these belts since I got my first one a few years ago -- they look great (no holes!) and the automatic buckle / detent system works smoothly. I got my father one for Christmas a while back, and now he won't wear any other kind. He reports when the belt wears out, and I get him a new one, which I think is hilarious.

Which brings me to the one weakness of the Kore system, which is that they eventually all crack in the same place. I typically wear mine all week for work, so we're talking about a lot of hard wear here -- probably enough to wear out an ordinary belt -- but eventually they all split on the inside along a small angled cut where the track system has been inserted. It's an understandable technical problem, and I frankly don't mind replacing the belts every year or two, but it's too bad because otherwise, with no holes to stretch and tear, the belts are nearly indestructible.