The current configuration on my Amiga 2000s are:
The Amiga 2000 is the successor to the Amiga 1000, the main differences were lack of a keyboard garage, multiple internal expansion slots (5 Zorro II, 3 ISA, 1 processor, and 1 video), and the placement of kickstart in rom rather than using write protectable ram to store kickstart (for the most part an advantage). One the ISA slots runs along with one of the Zorro II slots so a bridge card can be inserted into both (the ISA cards are not accessible without one of these bridge cards). THe Amiga 1500 and 2500 were actually different versions of the Amiga 2000, the 2500 shipping with a 68020 processor card and the 1500 with two floppy drives. The 2000 originally shipped with 512kb of ram (all chip) and the OCS (original chip set) later 2000s shipped with ECS and a fully 1Mb of chip ram (upgradable to 2Mb if one put in a fatter Agnus).
Are you an Amiga user? Do you wish to support the Amiga? If so you may want to join Team Amiga
A few Amiga Sites on the web are: