The best logo is one that describes you or your channel in an unique way and has a high recognition factor to your visitors. This means that re-using your favourite musicians logo really isn't the way to go. Takedown on youtube is really easy so it could come back to haunt you. Taking out a stripe or adding one (maybe use a square boundry with rounded edges instead of the circle) is my best suggestion if you don't want to create something totally new. For the color scheme. Think hard about your message as color tells more about a logo than the actual image in these instances, blue is cold and somewhat sterile, gold/yellow on dark colors says "this is exclusive/expensive". Red is an intense color and 'jumps' at you when overused. That being said, I'm digging the yellow-ish / dark brown one (right bottom) best in terms of contrast and final looks.But the left one (white/brown) captures more attention in smaller places like an avatar.