I know this thread is probably done, but I just saw it and wanted to toss in my thoughts.
In my experience, if it's very friendly, easy-to-handle chickens you want, you need to hand raise them. The most important thing about the brooder in order to achieve this is to have it set up like a kid's doll house. Take a box or tub and put it up on a table. Cut a door into the side, and do all your handling of the chicks from this side access.
Baby chicks have an instinctual fear of being approached from up above. Doing it from the side permits them to see who is attached to the hands reaching for them. This is ideal for small children, or adults with back problems. I usually pull a chair up to the table with the brooder on it and play with my chicks for long periods. I slide my hand into the brooder up to the chick's toes and it will instinctively climb aboard. After a bit, the chicks will climb onto your hand as soon as you stick it in the brooder. They become friendlier as time passes. This is in direct contrast to top-brooder raised chicks who generally become more afraid of being handled as time passes.
As adults these chickens will be extremely tame, and they'll let you pick them up without running away from you. Top-brooder raised chicks will be skittish and usually won't be nearly as tame as side-brooder raised chicks when they reach adulthood.
I go crazy designing my brooders, cutting windows into them, and even joining two or three boxes together with pass-through's cut into adjoining walls for large broods. I add perches and 2 x 4 blocks of wood for playground equipment, and toss in a little "hot tub" of sand for a dirt bath. I can't imagine anything more fun for kids than playing with chicks in such a brooder.