Linux Mint 12 served me well without problem until one day last week I needed to re-install my wife’s computer. Since it was a fresh install so I chose to install the latest Linux Mint. During the process I found that Linux Mint 17.1 MATE is a much better version for all computer in my house!
For those who are new to Linux, I would say Linux Mint 17.1 MATE is the closest operating system to Microsoft Windows. You would have the shortest learning curve if you replace your Windows with this one or install it side by side with your existing OS, whatever it is.
You may want to read this post if you cannot decide on which version of Linux Mint might work for you.