I'd say Test and CParts are about =ly strong. Both have their strong songs (Animate, Stick It Out, Nobody's Hero, and Cold Fire of CP; title track, Driven, Time and Motion, and Resist of T4E; as well as the instrumentals) yet also have their share of weakish/bland efforts (Alien Shore, Under Sun and Moon, Speed of Love of CP; and Half The World, Dog Years, and Virtuality of T4E). The rest between the two are about equally good, if not particularly great.
Overall, they're both good, if not great albums which are generally outstanding at best and bland at worst. Far better than Power Windows and Hold Your Fire, and most definitely superior to Roll The Bones. I say that Vapor Trails is probably their best since GUP, though. (Can't comment on S&A, though; I do not have that one)