Both self-installed systems and professionally installed systems offer top-of-the-line smart technology, so this depends more on your comfort level.
The DIY systems are designed to be installed by the average person, however, so you don’t need to have a special skill set. Still, you may decide you feel more comfortable having a professional walk you through all the features.
One thing to keep in mind: DIY systems tend to work better in smaller homes or apartments; professionally installed systems might be preferable for larger properties.
For more, compare DIY vs. professional home security installation options.