For a long time, I used a hand-me-down Tandy 1000a from my dad. He'd really tricked it out-it was at 640K of RAM, had dual floppy drives, a modem(he ran an income tax business from home from the mid-80s to the mid 2000s), and best of all, a 30mb "HardCard." He eventually let my grandfather borrow it, and somewhere along the way it went to the trash.
A few months back, I heard of a 1000TX available for sale that was fitted with a HardCard. The TX can hold a bit more RAM, has a 3 1/2 disk drive, and most importantly a 286(the 1000a was an 8088). The guy selling it didn't want to ship it, so it's currently with a friend who needs to get it shipped to me. There's also the issue that I don't have a Tandy monitor, although the TX supposedly will work with an ISA graphics card so I can drop one in and use a VGA monitor. I have an NOS 5 1/4" drive sitting here that will go in it as soon as it arrives, as I still have a bunch of games I grew up playing on bootable 5 1/4 disks. Of course, I'm hoping that it also has the original Tandy software installed.
As a side note-this hardly counts as my first computer, but I'm a computer collector. I mostly collect Macs(I have everything from an original 1984 "Macintosh" to several nice Intel pieces that are now considered classic, and a whole lot in between) but also have a broader interest in the once vibrant scene of RISC or at least x86 alternative systems that were available. I have some SGI equipment, which is fascinating not only for how capable it is for its age but also how over-the-top the designs are. Aside from PowerPC and MIPS, I hadn't expanded my RISC "collection" for a while. Some folks at work know about my "pecularities" for lack of a better term, and a Sun Ultra 5 appeared outside my office door this past week. Unfortunately, I'm stuck at the login screen and also can't "back door" it since I have neither the root password nor the install media. I should drop another hard drive in it(fortunately, it's ATA) and do a fresh install of Solaris-10 will run on the processor in this and is available free from Oracle-or otherwise bite the bullet and either do one of the Linux distros that supports it, or preferably something like FreeBSD.