Spendor S3 vs S3/5 or S3/1p

Hi, how come I read and hear some much about Spendor s3/5 and s3/1p (sorry if I did not get the names exactly right) but never read about the S3? In the S line it seems the the model 3 gets less press than any of the others. Any thoughts on this or experiences with the S3.

By the way, I tried a search on this discussion group but any search of Spendor S3 just listed references to Spendor s3/5 which match the same search criteria alas.

Thanks,
Art