Hi. Only problem I have is your combos 
Easy
00:53:736 (5) - New Combo.
00:56:593 (1) - No New Combo.
00:57:736 (3) - New Combo.
01:04:593 (6) - ^
Hard
01:08:879 (6) - New Combo.
01:13:736 (8) - ^
If you get the pattern, no need for me to point out the rest.
Insane
For an Insane, you've got too much stacking IMO. Stacking generally makes it easier (unless... never mind). Reduce some of the stacking, esp. the ones like 01:29:736 (1 ~ 5).
Otherwise, nice map. Star ~ ☆

Easy
00:53:736 (5) - New Combo.
00:56:593 (1) - No New Combo.
00:57:736 (3) - New Combo.
01:04:593 (6) - ^
Hard
01:08:879 (6) - New Combo.
01:13:736 (8) - ^
If you get the pattern, no need for me to point out the rest.
Insane
For an Insane, you've got too much stacking IMO. Stacking generally makes it easier (unless... never mind). Reduce some of the stacking, esp. the ones like 01:29:736 (1 ~ 5).
Otherwise, nice map. Star ~ ☆