I don't know about the trial, but you can look through this updated comparison list attached. From what I see, the main differences between Basic and Platinum are less tools in Constraints, 3D Objects and various Architecture tools. The killer in Architecture is that Doors & Windows are limited to 2 "Types" in Basic. After unzipping, you may need to "unblock" the CHM file in Windows Properties for the file to open properly.
Designer, Deluxe, (Basic, Expert, Professional), Platinum
Windows 10 Pro (1909), 64-bit