According to the manufacturer, the defect rate is 2% or less (now it's less than 2%)...but if you look at this thread as reality, it's MUCH higher. Reliable or not, the warranty is now 2 years, it's up to you if you want to deal with the service and turnaround time. I'm starting to think it's like buying an LED TV, it can be a "panel lottery"...same tv, same model, but different picture quality....this issue occured in newer macbook pro retinas as well, they were using two different screens in the same models.
Only time will tell, as more and more buy the Cloud Plus', you can be sure that they will be reporting both what they like, and don't like. IMO, you will be reading more posts about Clouds "not running hot enough". But what's hot to one person, will not be hot to another. VX can do whatever they like with the temp profile anytime they choose, just like any other minor upgrade tweaks.