I really need help... I'm having trouble deciding between CDI-500's and Pro Scratch 2's. I'm pretty sure I want the CDI's but for some reason I feel like I should get more opinions on the PS2's. I'm also not sure if I should get the Q-Spand MKII PRO Mixer or Q-MX2BPM. Anyone tell me which one is better? I need all you guys can give me... everything and your help would be much appreciated!