My
Musti looks very good for 3 months old - looks like he will be a keeper. I had one boy I just sold that was like that - very nice! Gypsy - well
On the littles - waaaaaaaaay to young to determine boy or girl! I guessed at a few weeks old too and was wrong - the agressive ones turned out female - the friendliest one turned out male. How old are they? They look about 3-4 weeks old? They look like they are at that gawky stage where you won't see any clue as to how good they are going to turn out. All you can do at that stage is look for physical things like 5 toes, correct comb, feathers on the middle toe.. forget about looking to see floof. They do get better later on.
Your hatchery girl is better than mine - but personally I would not use her for breeding unless she has something that is missing in all your other birds. Unfortunately HQ is usually a backwards step from most breeders with better stock and both of the other ones show better stock than the hatchery girl. She just doesn't have the poof like the two others do - not in the tail, not on the head. I don't see the stance either. I recall my BQ/SQ chicks got a puffy tail and funny heads and looked like firecrackers on the back end and electrical show on their heads at about 6 weeks. I love my hatchery girl, makes the best mommy because she doesn't care if I mess with her while she is broody - but she isn't allowed to hatch her own eggs.
I take Paypal or credit cards, but not cash unless they are pure copper pennies