Hmmm…“my” first Mac was one I did not own, but was the one in use when I was in medical training. It was, if I remember correctly, a IIcx, but I may well be wrong on that. We used it to generate procedure reports (I created all of the templates in MS Word), and to write academic papers. We had to complete to get time on it.
My second Mac was a Quadra 950, shared with one office mate, also during medical training. It was a big step up primarily because we didn’t have to share with anyone else.
I remember back then connecting all of our Macs with coax cable and AppleTalk; the TCP/IP stack for Mac was rudimentary at best, which didn’t really matter that much since there wasn’t much of an “internet” at the time.
The first Mac I actually bought on my own was a PowerMac 8500. I remember the night I got it; I drove 40 minutes in the rain to the University of Connecticut bookstore which was the only Mac dealer around at the time to buy it (yes, with an educational discount), drove it home, and stayed up half the night playing with it. I still remember it being the most fun I had had with a computer in years, which is saying something since I go back to the PDP-11 days!
After that I left the fold and spend some years building my own custom machines and running Linux on all of them. When OS X came around and an Apple Store opened at the local mall, I had no choice but to buy back into the Apple System. Oddly enough, I don’t actually remember what I bought. I know it wasn’t an iMac (I’ve never owned any of their models). I think it was probably a white iBook that I got on clearance (at that time, the Apple Store had a clearance table with discounts on discontinued models). Eventually I moved to the cheesegrater MacPro, and I’ve owned a succession of MBPs (now with the 13" with Touch Bar), the “garbage can” MacPro (sold recently), and at least 4 minis (still have one ruining now as my home server).