The question to ask is 'if money was not an object, which machine to keep?'. Sounds like the STE is better for software and ST compatibility
The Falcon to me is cool because I am more of a hardware guy and like that it has built in RTC, true SCSI and IDE HD and more memory and has a true VGA support so I can easily connect to anything. I can easily connect a CD rom to Scsi when needed.
Since it was discontinued the software just didn't happen except for Demos and such.
However things like Cubase Audio are nice and was ahead of its time