So far so good on ours. Just keep them lubed with a dry spray Teflon lube (CRC). They don't like low voltage, because they stop with resistance, so just make sure you have good batteries, or plug in. Every once in a while, you may need to re-sync them, and if you get the latest version the tiny motors are easily replaced without pulling down a lot of trim.
None of the slide mechanisms are immune to issues. Montana's were bursting hydraulic hoses under the bed, cable systems are just what they are, cables that wear and snap (good old StarCraft pop ups and their 12 miles of cable), and motors go out on Schwintek. (not picking on Montana - that is just the brand we owned before a couple of times - almost all the manufacturers had similar issues)
Slides are nice, but with that they are a huge engineering undertaking on a low budget so they aren't without fault.