pfft I'd doubt I'd ever use them. Level (or whatever it is in japanese) 250 something is super low. They go up to 2500.
I have gameplay of the last actual levels (before the easy EX levels, although i'll upload those too) on my youtube:
www.youtube.com/hetoan2
^^ there's Grade S Level 1
I'm posting the rest now. I don't have links to 2, 3, and 4, but they're already uploaded.