Final card, time it out if you have a lot of lives, it's safer than beating it normally.
I disagree with that. I find the easiest phase to be the second to last one (Utsuho has less than 25% HP and the timer is above 30 seconds), because it has the best balance of having a lower bullet density (for fewer random clipdeath screwups) and not being too ridiculously fast (like the final phase). The two hardest phases are the first one, due to bullet density, and the last one (Utsuho has 0 HP, or the timer is below 30 seconds), due to speed. That said, I would advocate shooting her constantly to get her HP down to the 25% required to trigger the "easy" phase, and once you've gone that far, there's no point in timing it out because you're going to have to a) last longer, b) face the hyperspeed phase.
Edit: bah, I just remembered that Subterranean Sun's firstfirst phase has no snowballs. Still, not a fan of the high red bullet density for the firstfirst phase, or intentionally facing the hyperspeed phase.
In fact, the only final card I would recommend timing out (other than Resurrection Butterfly
) is Hourai Jewel, since it's the only card that doesn't take an extra 90 seconds to time out as opposed to capturing, and its the only card whose survival strategy (left/right streaming, which I prefer) is vastly different from its efficient capture strategy (up/down streaming).