My opinion: Get a 1500/2000. You can pick one up for about the same cost as a nice 1200.
Fit a GVP HD8 and fill it with memory and add a nice fast SCSI hard disk and Workbench 2 or 3.
This would give you a good solid machine with 9mb of memory which would be fine for tracker work.
Of course if you spent a little more you could hunt for a GVP Geforce instead of the HD8 and gain the speed benefits of a 030 processor while still getting the memory and SCSI.
The other good point is that you'd have Zorro slots
To echo what others have said though try and make sure it's ECS and upgrade the Kickstart rom if it's still on 1.3.
