Depends on what you are doing, if you are running applications and only
applications that are 5-6 years old that were written for ME then maybe
Windows ME, personally the NT products (NT3.51 workstation, NT4 workstation,
Windows 2000 Professional , Windows XP Professional) that MS have produced
are far more reliable than the equivalent 'home user products' e.g. Windows
3.1, Windows 95, Windows 98, Windows 98SE, Windows ME, for at least a couple
of reasons firstly the memory management is totally different and better
with the NT products, and the HAL (hardware abstraction layer). How many
times have you had to reboot your computer running ME because an application
crashed?.
The thing that clouds this argument is perceived performance, NT based
systems feel slower than their equivalent 'home product', this is due to the
more rigorous checking within the NT platform on memory usage, disk usage
etc.
Windows XP Pro SP2 is the best operating system MS have ever produced for
the desktop, but it does require a good spec computer to run it, e.g. my
lappy is 3GHz 2GB RAM, 60GB 7200 rpm HDD and it runs faultlessly.
Also consider whether MS are supporting the product you want, and all the
software driver manufacturers are writing drivers for the OS you want.
http://support.microsoft.com/gp/lifewin