Fall 2017 is much like most every fall in that Apple has released another version of MacOS. Each year a few of the oldest systems become obsolete and are not supported in the latest version but if your Mac is supported you might be tempted to upgrade when prompted by the App Store to do so.
With each passing year it seems that the first release of the annual MacOS upgrade is a litte more buggy and this year seems to be the worst. MacOS 10.13 has suffered from a surprising number of bugs considering that Apple offers public beta testing these days. Most of these bugs are fairly minor but a few security related issue have prevented OWT from encouraging users to upgrade just yet.
However, with the release of 10.13.2 we can finally recommend that those with 8GB of RAM or more go ahead and upgrade. Those with 4GB that were already running 10.12 (Sierra) it won't be much worse. Really with 10.12 and newer we feel you need at least 8GB or RAM.
Don't expect a lot of new features with High Sierra but it is a solid upgrade and seems stable and most of the annoying issues were resolved in 10.13.2.
In 10.13 Apple is now offering a new file system: APFS. This file system seems fully backed for SSD drves but for fusion and traditional hard drives it is not yet ready for widespread use. Disk Utility WILL let you format your drive with APFS but if you don't have an SSD we really don't recomment it at all. During the installation of 10.13 if you have an SSD the installer will prompt you to convert your drive to APFS and we suggest that you do as the performance improvement is noticeable. Fusion and traditional hard drive users will need to wait for future support from Apple.
Be sure to intall ALL updates labelled as "Security" anytime you see them. A nasty root password bug really exposed Apple's lack of software testing and the fix is very critical.
As always, if you need help ugrading or would like to see about putting more memory in your Mac OWT is here to help.