I'm refurbishing an A2000; it's a Rev6.2, 1Mb + 4Mb on 2 2091 SCSI cards.
I think that is what my A2000 was, maybe a 6.1 mobo, been a while. I was very happy with its performance with a GVP 040/4MB and onboard SCSI, and a CV643D. The fast RAM on the 040 was probably the biggest difference - while expansion RAM on the 2091 is significant as you do NOT want to live with just Chip, accelerator-bus RAM is the biggest difference. If you get the working Progressive accelerator with a lot of fast RAM, do one of the fastblit programs, etc. you will get nice performance.
I also got comments that my rig loaded most webpages comparably or better to Windows rigs. I generally ran 1024x768.
It was an interesting contrast to my 1200 which I needed to keep in a non-tower format for the desk where it lived. So I did a bellyboard '060 with 64MB RAM onboard but used AGA run through a flicker fixer, surfed in 256 colors @800x600, opened pictures in separate windows when I needed more color. The AGA was definitely the bottleneck there, but still tolerable surfing, the problems were more with browsers lacking modern features.
