First mac used - Mac Plus + external HD (20 meg, I think!) that my dad used for his doctorate circa 1986.
First mac owned - Colour Classic that I had for Christmas. I must have been about 13 or something. (40 meg HD internal, 6 meg of ram? definitely a 68030 processor of some description - 25 MHz maybe). It's a very collectible machine now, in the far east. They mod them to have G3 processors. Look it up in a search engine....
Second mac owned -LC475. This was the boy at the time. a 68040 processor, and I upgraded the machine to 12 meg of ram, from what I remember. It also had its own co-processor, which meant it worked quite fast. I played Marathon 2 and the original Escape Velocity on this machine a lot. It was superb for its day.
Third mac owned - PM5500. Upgraded several times - not an amazing machine. I liked the TV card and everything that came with it, and it was my first machine with an internal CD-ROM drive, but it wasn't that impressive. It seemed to crash a lot more than the LC475.
Fourth mac owned - PM6500. Bought it because it was cheap and upgraded it to hell with a Voodoo 1, then Voodoo 3 graphics card, 10/100 ethernet card, extra ram, and now the ethernet card has been replaced by a USB card. Also took out the original lvl 2 cache chip and put in a Sonnet G3/400MHz upgrade card with 1meg of lvl 2 cache. This machine is used daily by my little brother to do school work and play Oni.
Fifth mac owned - Lombard Powerbook G3 (333MHz). The machine I'm typing on now. It has been a VERY good computer for my first portable, and still feels quite usable 3.5 years after I bought it. It now has 320 megs of ram, a bigger and faster IBM hard drive and a firewire PCMCIA card. A cool mac connectivity-wise because I've got USB, SCSI and Firewire. It does tend to crash quite a lot though. It might be because I push it too much. Apart from the Public Beta, I've never installed OS X on here because I seemed too slow to do the job properly
Sixth mac (soon to be) owned - ordered 2 days ago. A PM Dual-867. This will be the first really professional mac I've ever owned that wasn't a portable. I'm looking forward to Christmas greatly