lol, Saidaioujou is still ridiculous (arcade). I can't do the second boss without bombs. I still catch myself dying on the stage one boss! I might break down and switch to C-S because stage 3 as A-S is overwhelming.
Try the laser ships. Your worst enemies are the big ones that spam tons of bullets on screen (especially in stage 3) and laser gets rid of them faster. It also makes boss battles a little easier.