I have also purchased their NEO as my first FSLabs product and I am using it with 2020.
It is a very complex aircraft but my main issues thus far is that it has the worst performance of any aircraft that I own, between Fenix, all PMDG and iniBuilds aircrafts. On the ground while engines are turned off, it has fairly good performance, but once engines are turned on it loses to any of other products that I own. Another issue that I have is that the EFB has very laggy animations and the integration with GSX is not that great, specially for refuelling, boarding and deboarding.