The dominance of synthesizers in Rush's music ended with the release of their 1989 album Presto. With a change of label and producer, the band desired to return to their musical roots. While the synth isn't absent, it's no longer dominating the guitar and bass as it had been since Signals.
While not their most remarkable album, I have fond memories of Presto simply because it was the first one of Rush's that I heard on compact disc (which was, as you would expect, much more dynamic than the LP that I had bought on release day).
Of the three singles from this album, "Superconductor" is my favourite. While technically released as a single in 1990, it was of course recorded and sold in 1989, so I'm claiming a technicality here.