@cmvsm,
As a collector of everything Amiga, I suggest you go with the A500. It is harder and more expensive to find working expansion parts for the A1000. If money is not an object and you can accept having only 512k Chip RAM and what ever FAST RAM expansion you are able to find working, then the A1000 is a more elegant design, and as you said, is more nostalgic. (finding an A1000 with a Phoenix board is another possibility, but very rare)