Since they are both young it's hard to tell...
The first one has a longer neck but he should grow into it. I don't see anything wrong with his conformation other than he is young... So it's harder to judge, that's not including the fact he isn't square in any of the pictures to get a good judgement on him.
The second one is ADORABLE! And for his age he looks really good. I don't see anything wrong with his legs other than that young bowed knee (Which is only from his age he should grow out of it.)
I am not an expert but I am being trained for Halter Judging(: So I hope I helped some(:
We ride side by side, A cloud of dust, a ray of light, His touch is my temptation, My kiss is His salvation, I'm sweet, He's wild, We're dangerous, Cowboys and Angels