Ooooohhh, the Indus GT drive was the one we gazed at in the ads in US Atari magazines.....they were never imported here and we could only dream of them with their sexy track indicator ( which was rather pointless of course, but that didn't matter it was sexy) and it looked SO stylish compared to the 1050.....
Anyway my list:
Audio Sonic pong clone
Atari 2600 (which is still waiting for me to take it away from my parent's attic one day....I know I stole one of the joystick connectors for some electronics experiment when I considered the machine to be "old and worthless"....
Atari 600 XL with 1010 cassette recorder, later I added the 1064 Ram module, 1050 disk drive and even a 810 interface (when they got dumped for low prices) to hook up a C.Itoh matrix printer

The 600 XL was replaced by the 130XE of course and later the
Atari 1040 STfm. For this I built a kit from an electronics magazine which allowed you to hook up an "OMTI" PC Harddisk controller which worked great. Through it's special encoding (RLL instead of MFM IIRC) it even gave you 50% more HD space for free. I managed to somehow get a cheap Rodime (IIRC) HD which gave me a whopping 15 Megabytes....I thought I'd never needed more......
Later I bout the regular ST harddisk in the "MEGA" case, which was nice because with some simple hacking it allowed a second drive to be installed. Still later I built everything in a huge "server" towercase, including SCSI harddisk and one of those ultra cool Syquest removable harddisk drives on which you could put 44 Mb on an exchangeable cartdrige....I still have that tower but havent powered it up for at least 15 years....
Still have a couple of 130XEs, and later I bought an Atari 800 PAL version, which are pretty rare and an almost NIB XEGS system.
Of all the machines I owned I love the Atari 8 bits machines the most. They taught me all the basic things to know about computing and they were the best 8 bits machines of their era.