Both versions are very good. If you really push me to choose one, I would go for the bass one, because it gives the chorus some "meat" in the accompaniment, and it contrasts well with the verses. Songwriting-wise: wasn't what I expected, but it held my attention (initially) enough to get into it properly, and then it had this hypnotic charm, mesmerising me. A great, original effort. To be 100% honest, though: Solaria's performance is below par, for me. This song needs emotion, like someone above has said, and Solaria delivers a celluloid, artificial performance (for me), here. If there's nothing better, by way of a voice, fine; but, if there is, it's worth searching for, in my humble opinion. Regardless: a GREAT song.