I'll rank the albums. . .
1. Testimony 2
2. Testimony
3. One
4. Sola Scriptura
5. Lifeline
6. ?
7. Songs from the highway
8. God Won't Give Up
9. Neal Morse
10. It's Not Too Late
Really, 1 through 5 are all close, I consider them all masterpieces (yes, even Lifeline, because So Many Roads is like, my fav song ever!).
One and Sola Scriptura, although they aren't at top of the list, have received the most playing time. But maybe I've overlistened, as I don't go back to them very often anymore.