This one's a LOT more difficult, but it's definitely between 3 and 4.
Metropolis and LTL are both top 10 DT songs, and I probably couldn't choose between them. Home is probably also top 10, and DOE is probably my second favorite DT instrumental. That gives a slight edge to group 4. However, so far, I like S2N better than R137.
I therefore flipped a coin and chose group 4.