Its really just a bunch of junk I got on sale. If I could do it over (and had the money to do so), I'd buy a set of the C4s, maybe double up on some. But like a lot of people, I'd keep the red and yellow aliens out of my current rack.
but what you want in your rack depends on what you're climbing etc blah blah blah. racks are only aid if you french free.
**nevermind...just read the title...aid rack **