I didn't use a walkthrough on my first run. I tried to find as many goodies as possible on my own. As for my next play through, I may do so for a 100% run!
I haven't consulted it yet but I've got a maimai walkthrough on hand if I seriously cannot figure out where the last ones are. I've got 70 some odd. There's some somewhere around the whole Dark Palace area and I cannot find the lil buggers!