Get the later model ones and don't worry about them being clean, the best deals are the ones that look like they were stored in the ground for years on end. They usually clean up well afterwards. If you want a later (72 and up) model this is what to look for. here is a 67 - 72 L1 (left) next to a 72 and up L1 (right) to see how the logos differ. The 72 and up ones are much smoother and comfortable shavers than the earlier L1 razors.