"Mountain Lion Rocks! I am very pleased."5.0 starson by pgsurface
Pros: Improved startup time vs Lion. New stylish dock. AirPlay. New Safari update is over satisfying. Dictation (Siri) works flawlessly! More iCloud integration.
Cons: Notification center isn't very useful. Lacks support for capable older hardware. Trackpad use on desktops STILL very buggy.
Summary: I am pleased with Mountain lion. Apple did a fine job of refining the dock, Safari, iCloud features, and security features. Mountain lion takes more advantage of Apple hardware, I do believe. I am currently running Mountain lion on a 2011 21.5 inch iMac. I also have it running on a 2009 MacBook Pro. The MacBook Pro, although old, is very capable and should be able to take advantage of AirPlay. On my iMac, airplay works wonderfully. I am still having issues using the trackpad. When in use, sometimes the computer will not pick up clicks. I am on second trackpad. Thus to my conclusion, it is a software error. Although downloading this new operating system was convenient, I still would rather have a DVD copy for backup and restore purposes. In my opinion, the dictation feature is by far the most handy. This entire paragraph, with the exception of a few words here and there that needed correction, has been written using the dictation feature. Although I do not find the notification Center handy or helpful, I do believe with more app integration it will find more use.
When lion was initially released, I was frustrated with Apple because I believe that they took a step in the wrong direction. Compared to an already outdated Snow Leopard, lion was extremely slow and did not take full advantage of Apple hardware. After a few updates, it became more stable and was more pleasing to use. With Mountain lion, I have been pleased the entire time because I have not experienced any problems with the operating system.
Here is my final conclusion: if you want to spend $20 on apps that have been ported from iOS, go-ahead. Snow Leopard and Lion are very capable operating systems and still have a bright future ahead of them. Mountain lion is merely an update.. However, if you own a newer Mac, the features are innovative and handy. Well worth the $20.