@Starrunner : my 2 cents :
keep your A1200 in desktop with a BZ1230+scsi+fpu+ram and thez games you loved will still work, if you put a 040 or highier it will cost you an arm, and you'll suffer of compatibility problems.
If you want to get more power, than a 030 see and buy a Pegasos1 (150 euros) or a AmigaOne G3 (400/600 euros) and you'll have a more stable systems, with correct browsers and more 'actuals' tools.