Been a Windows user for decades and recently (September 2012) switched to a new Macbook Pro 15 inch (OSX 10.7) which began having serious stability issues after just a few months. Something to do with the Nvidia display adapter vs built-in which caused the Mac to panic regularly. The frequency was twice weekly turned into daily to hourly as time passed and in April 2014, exasperated with it, I got a replacement MBP Retina 15 with SSD (OSX 10.9.2). This is a work laptop with limited IT support.
Everything worked well on the MBP Retina until last week (2 months) when it froze with the "color wheel of death" in the middle of an MS Word session. Hard reset it a dozen times, got stuck at the gray screen with Apple logo for hours (waited overnight once) but did not succeed. Finally after 24 hours of trying, it opened my desktop Finder and was able to back up most of my files into an external USB drive. Following a KB article on Apple support, I removed a few startup items (Login items) except Google drive which I need for my work. Ran a disk and permission verify using the disk-utility and found no errors. Checked activity monitor and found that the pesky "jamf" and "vShieldscanner" were taking 10-25% of the CPU, nothing major. I went ahead to restart it cleanly which shutdown the Mac but it froze again upon startup.
On the base OS install which contains McAfee Security 1.2.0, I'd installed on my own, Google drive, VZAccess Manager (Verizon broadband), Garmin GPS console. I removed these except Google drive.
I called Apple support (Mac is still under warranty) and they instructed me to restart in safe mode (Command-shift-V) and it proceeded to open the desktop but within a few minutes of opening it, the color wheel of death popped up again and everything froze. I tried a few more times and gave up. The only other option as per the Apple support person I called was to reinstall the OS from the Recovery HD but unfortunately, it needs a firmware password. IT support at my company wouldn't share it with anyone and I'll have to take it to them.
I'm an Apple fan with several other iDevices but the experience with the Mac leaves me wondering if they are serious about the quality of Macs in the Enterprise. It has me wondering if Apple is spending a lot of time with making everything pretty, external case, gui etc. but neglecting OS and HW stability??