Yes, the Borland TUI was pretty good. But nothing came even close to what we had on the Commodore 64 with the X-Ass Dev Kit. You could code in a nice TUI with syntax highlighting. Press a key to assemble in a split second, execute the program, press reset and be back in the TUI exactly where you left off. And this with source file > 64 kByte, creating executables that occupied the complete memory space of the computer.

https://csdb.dk/release/?id=27625

http://www.fairlight.to/docs/text/xass_docs.htm

So productive and easy to use.