Kentico 8: Overall a good tool. Some tips here to avoid certain issues...

We implemented Kentico 8 for a client. It is a good product with a lot of capabilities, but we did run into a few significant issues which Kentico says they plan to fix in the long term, but cannot prioritize right now. If you are using Kentico 8 Media Library with Azure integration, be careful not to store too many files in a single folder. Separate your files into many folders and keep the number of files per folder below 100. If you want to use Salesforce integration, note that custom activities are not passed into Salesforce's activity history by default, and also you cannot easily use a Salesforce sandbox with Kentico, so you will need a workaround for that. And when using the EMS Content Personalization feature, the personalization variant fly-out menus will take a long time to load, but they do load and after that you should be ok to manage variants. If we'd known these things in advance, we'd probably have made some different technical/architectural choices at the beginning of the project. But all these things aside, Kentico 8 EMS can still be an excellent way to centralize your digital marketing efforts into one system.