I’m with Thor on this. Except for Terminator 3 that I consider an unimaginative sequel I thought both 4th and 5th were very good, underrated solid sequels. Elfman’s score to 4, in particular, is great also.
Well, I think 3 is a really great film too -- superior to its two sequels. But let's not dwell on that; good to see a fellow appreciator of SALVATION!