I'd stay clear of the TekMagic if possible and get the Blizzard 2060. The TekMagic needs the three finger salute on software resets in order to boot and the SCSI controller can only boot from FFS partitions.
It is something you can live with, but can get annoying in the end. It did for me so I decided to ditch the A2000. The SCSI controller on the TekMagic is super fast though, so it's not all bad.
Good advice if you can find a 2060. I had some Friends in RMAU that hat the Tekmagic and they never complained. Plus if SoftHut actually has them...
I had a rev 4.2 A2000 with fatter agnus, PP&S 040/28/32MB RAM, CV64/3D, Hydra Ethernet, GVP 4008 SCSI with GURUROM and 4MB fast ram. That was a very nice 2000 system! The only real drawback was that the SCSI was on the Z2 bus. Too bad the 1084 decided to die and take out the 2000 in the process. I ended selling or giving away all the parts. What a nice system though!