Really tough choice. Both S&A and VT are my top 5 Rush albums.
In fact they are my 1 and 2 favorite albums at this moment.
But I sometimes skip some songs on VT (OLV, OOTC and nowadays Secret Touch-'cause I listen to the tune to death on many boots).
On S&A I don't skip any song.
So I vote for S&A by a margin.
I sometimes think if mixing the virtue of VT and S&A, it would be one killer album.