Yale and Schlage locks are the about the best quality locks you will find. Each has it’s pro’s and cons’. Here is a little table that compares locks features at a high level.
The Schlage camelot is an excellent lock but has minor firmware issue which could cause trouble with the mesh under heavy load. It also tends to overstate it’s battery life causing it to die suddenly under load. The FE599 is another excellent option but also has a firmware issue that prevents the stock DTH from showing it’s correct locked status.
Yale is a great overall lock but some of the Connexis z-wave modules have a bug which could cause excessive battery drain and may need to reset the lock/replace the module.
No lock is perfect, but overall Schlage and Yale are amongst the best. You can find some great deals on eBay and Amazon for these locks. Customer service is great with both companies.