Instead of OEM Windows image, use this tool to get rid of the crapware (malware in some cases): http://windows.microsoft.com/en-us/windows-8/create-reset-re... Windows Update is terrible. OS X has that beat. But Windows is ~5 years mainstream support, ~ 10 years extended. With OS X, you don't know. It might be 18 months, it might be 3 years.