The first and only Tandy computer my family ever owned was an old Tandy 1000, on which I also played my first video game, which was Hunt The Wumpus.
I have only owned two other brand-name computers since: An IBM XT that I had for almost 10 years, until the motherboard died in 2001, and a cheap Dell Dimension B1100 that I only bought because I needed a computer quick. Otherwise, I have only owned either build-my-owns for regular use, or old and cheap ones I'd find in thrift stores to play around with.
However, that Tandy has always held a special place in my heart, because it was where my love for both computing and video gaming came from, both hobbies that have been very big parts of my life.
The very first TRS-80, bought new in 1977 for $400 ( a lot of money in 1977). It had 4k (!) of RAM and I used my own cassette recorder to load software, mainly backgammon, which I really enjoyed. I also used a spare B/W TV as the display.
I was very excited with the machine when it was new, but soon lost interest in it due to the various unreliabilities that it suffered. I didn't stick with the Tandy line, but moved on to the Atari 400/800 later.
Never owned, but had a bank of TRS-80s, with the screens and vertical floppy drives on the side, in high school physics class. This was '92-'93, so they were already pretty much dinosaurs, but they ran some simulations and statistical analysis programs in BASIC that we used for class. The more clever among us ported them to our TI-85s; already we had more computing power in our pockets than the behemoths on the table. And history repeats…
I have a few TRS-80 Model 100s lying around. Fantastic machines. Instant on, instant off, saves every letter you type as you type it, 32 magnificent kilobytes of battery-backed memory, monochrome LCD screen, and a fantastic keyboard.
I also own a REX2 and a NADSBox for it, which lets me back up the 32k to flash, experimentally run CP/M, and save my lame little BASIC programs and nonsense to an SD card.
Even 20-some years later, still an amazingly capable machine.