When I want vocals (and something a bit more cheesy), I listen to Shivers. Susana's vocals here are great, no wonder they made it to the album. But when I want more of a journey-like uplifting trance, I'll take Birth of an Angel. A classy production by Armin there. The way he opens up the filter completely exactly when the climax starts is amazing. Sweet synths and the style is spot on. Soft, uplifting middle-ground trance.
Overall, I prefer Birth of an Angel, but I have nothing against Shivers.
I'm not sure which version I prefer. I'm usually more of a person who thinks of vocals as an extra instrument, to me there are only about 10 tracks out there where I prefer the vocal version over the dub mix. Though in this case, the vocal mix is just as great as the dub in my opinion.
Shivers is the vocal version of Birth of an Angel though As Shivers was released later
I still remember my first Armin Only on the Ocean Diva when Armin played Birth of an Angel!
Oh what a night to remember
I prefer the vocals because the fond memories I have when I was in high school. I was gaming with a friend of mine and he would always put on trance records and this one of the tracks that made me explore that scene.