My experience is similar. Great hardware. Software is good until there is something I want to do that isn't very obvious, then it's either a hassle or not possible.
My favourite example being looking for the volume mixer, and after looking online the top advice seemed to be to pay for a 3rd party application for that... Wtf?
There are so many basic gaps in functionality and so many underbaked & poorly designed Mac OS features that I end up papering over with paid 3rd party applications.