Have you stumbled upon a go-to Powerup combo that seems to work best for you? DO TELL!
It's not very interesting, but Bandmate-Blast Notes-Super Guitar seems to hit the sweet spot for me. Bandmate assists in my obsession with maxing out all the tracks before checkpoints, Blast Notes are a simple yet effective way to get over the hump into Blitz Mode, and Super Guitar is super.
Howz about you guyz??