As anything Commodore ever did, Amiga was far overengineered for what it did.
That being said, there are only two Amigas worth remembering: - A500 as original one ( A1000 was overpriced crap) - A1200 as a cheap successor. Its upgrade value was "meh", but it was cheap. And there were games, actually using those extras. And it had a cheap HDD option (used an IDE drive).