The issue isn't that I want to use a different server, I am happy to use Musicbrainz, but I just want Express Rip to be a bit more diligent when querying.
I guess then either Express Rip should
#1 - offer me to choose between multiple results if the query returns more than one result
#2 - improve the query to use track times or disc ID or something like that to ensure that only one result is returned.
I submitted an improvement request.
Thanks for the reply!