I'm in no hurry, as my 4k monitor was sent to the supplier to be fixed, but it has been 5 months already, they still has fixed it, yet. That's why I don't have confidence in products which offer long warranty period.
Intel is better than AMD idle, because generally Intel's CPUs base clocks are much lower than AMD's base clock, not to mention fewer cores as well. In this case, 10 cores with the base clock of 3.7 GHz vs 12 cores with the base clock of 3.8 GHz.
When talking about performance, most (if not all) reviewers simply refuse to put the cost-benefit analysis in the same sentence. That is to say if you put the cost-benefit analysis in the same sentence, the 10900K will be less attractive.