Cloudee1,
I am pretty sure that the interpreter with the original SCI Studio (in the 'template' game) was 000.000.685 as well. I think it was Sierra's last 'real' SCI0 interpreter, and what they used to make Space Quest 3.
Well, you *could* say that the best interpreter is FreeSCI, as it is a community-developed/supported interpreter that supports SCI0/SCI1. Considering you wouldn't have to use things like dosbox, and could be used on linux, it would probablly be 'best' for modern platforms. I would think that SCI Companion could probablly use it in a 'template' game at some point.
I think if I had to pick one for EGA games that was made by Sierra, I would use 1.000.072 (Quest for Glory 2). It would be a little more complicated to code for, but I think it would be a good one.
1.000.174 (the 'Christmas Demo 1990' interpreter) has been one that I have been looking at for a while. I think it is a pretty decent VGA interpreter that still supports the text parser. It is 'relatively' compatable with some of the SCI0 forrmat (granted, not for views/pics).