Used them for many years and found the following negatives: 1 - Bearings wear out very quickly, creating a wobble and squeaking noises. Bearing kits are not cheap. 2 - The Eggbeater bends rather easily when his against a rock, 2 sets gone because of this. 3 - Cleats wear out quickly and are not cheap. These were the positives: 1 - Easy to clip in and out of in any conditions 2 - Lightweight if you get the top end ones 3 - Easy to service However, after a few sets either breaking or wearing out, I decided to try a set of Shimano XT pedals and have not looked back since. The Shimano is more stable on the foot, the cleat feels more secure when in the pedal. I have not had any issues with regards to clipping in when riding in the mud. I have not had to change bearings or anything since I got them 8 years ago. Absolutely bombproof.