Hello there! Here I'll leave my remarks regarding my experience on Zorin OS 16.
Here are my laptop's specs
Model: Dell Inspiron 1545
CPU: Intel Core 2 Duo T4200 (2.0GHz)
Space: 16GB USB Drive (I know this is low but I don't download that many apps and currently have 5GB+ free space)
It's been a single day since I installed Zorin 16, so far it runs very good without issues. Sometimes there are a bit of lag spikes but I'm okay with it. The animations seem to have minimal effect on performance surprisingly (compared to Windows Aero) It uses about 1.1GB of RAM on idle so i still have plenty of Ram to work on. Also, I've been using Zorin 15 Lite prior to this and also surprisingly, performance is on par (for now)