Corded or cordless?
Makita makes a 4-3/8" corded.
That would be the one 7echo. I hadn't known of the merger twixt the tow companies. Are you tellin me because of it that little saw is no longer available ?The Delta/Porter Cable merger is messing up a lot of good tools.
The Porter Cable 314 may be what you are looking for-4.5" blade, worm or hypoid gear drive, heavy duty little saw. I think my local dealer has some, but I am not sure if they are discontinued, yet.
They also made, or make, a 6" saw that is a typical looking circular saw.
The 314 was actually sold as a 'trim' saw.