The first one definitely looks the best. He has good confo. for a QH (nice back, good, round neck and head) I don't know much about QH bloodlines, but as long as he doesn't have any 'Impressive' bloodlines, that's great!
The last one's confo looked bad (swayed back, smaller head), I, personally, would go with the 1st one! lol! Good luck!
I <3 you Magic!
He knows when you're happy
He knows when you're comfortable
He knows when you're confident
And he always knows when you have carrots.