I do think that many of the problems mentioned here are related to probe problems. I have had probe issues, but I simply replaced them with new probes that are available on Amazon for cheap. I did have much better luck with them once I covered them with silicone grease to keep them sealed. Placing them in a plastic baggie or simply covering them in actual silicone should also help a lot. Once you get past the probe seal issues, they are very reliable, in my experience.