What do you like best?
Allows some Windows applications to run on MacOS without issues, performance improves all the time, vendor is very responsive to suggestions and comments, and product is relatively cheap (when compared to a Windows license plus a VM)
What do you dislike?
Support for main applications like Microsoft Office can be limited, performance can be poor, some apps just don't work at all. There is also an issue with applications 95% working and it not being obvious that something is wrong until quite a way down the line - this can lead to some surprises!
Recommendations to others considering the product
You'll see when you look at the website that it supports a lot of applications however you'll want to get it for a specific application - you should download and test it with the trial version prior to purchasing and be prepared to have to fully test - sometimes apps install, load, and run, but a menu option or a feature individually causes a crash.
What business problems are you solving with the product? What benefits have you realized?
To enable specific Windows applications to be usable either on Linux or on MacOS. Several applications run without issue (particularly the older ones). Packaging of the applications makes deploying them quite easy.