An 030 is also more compatible. If you use your Amiga mainly for games you will be happy with 030.
If you use mostly Apps/Productivity the 060 (or 040) will give you noticeably more speed and would be worth trying to get a hold of one.
Only problem is the 030, save the fact it has higher clock speeds, is no real improvement on an 020. A 28mhz 020 and 30mhz 030 are more or less the same performance in reality.
So my question is....is anyone working on a 50mhz 020 based card if it would cost less? Or are 030s the lowest spec 680x0 based CPU still produced?