Newgrounds has gone crazy.
Im sorry to say, but the mastering was horrible, it sounded like cheap rip off 1970's happy-hardcore techno and it made me barf that you actually ask people to buy this.
Sorry for being so mean to you, but this is my way of saying, newgrounds audio portal, you have to grow up.
As for you, i'dd spend some more time in the mastering, the bassdrum and bass really clip when they play together, and the sound is rough on the edges...
Now i've had mastering problems too when i started making music, so that's not strange. In fact, it's natural. Just read some tut's / ask someone for help, and along the way, you'll learn how it's done.
As for the drum samples, buy a deadmau5 sample pack, or tweak the VEC 1/2/3 packs to get a drumpack / loop that fits the sounds a bit more, this sounds like a random pack thrown over random untweaked VST presets pretty much.