I started on Timex Sinclair, with the whopping 16KB expander
went to TI 99/4A with full expansion
Atari 5200 for games
to C-64
to C-128 (2Mb REU, 1581s, etc)
Amiga 500
Amiga 2000
Amiga A1200
Compaq windoze machine (god what a mistake!)
Athlon windoze XP/SP2
The A1200 running 3.9 is still my favorite envirnment to work in. The Athlon XP machine is amazingly stable, horrible environment for programming though, but our main game machine these days.
WE still have a C-128 running here, mostly for my grandchildren - They love it.
Oh, I am building an A3000 now - almost done.