Before Amiga I was an Atari 800 guy... I can remember being exstatic about finally getting that 88k floppy drive! and the 16k upgrade...
I was also a Jay Miner 400/800 guy. I tried to design and build a 64K memory upgrade; it did work, but the machine would 'only' see 32K, which still was twice what most others in my user group had! Then I used $600 of my college student loan money to buy an ASTRA 1620 double disk drive - one of the best investments I ever made

I still have it all somewhere, including the Action! cartridge, the dot matrix daisey-chain printer, and a direct plug in modem. And Star Raiders projected onto a wall at night still rocks!