I agree that if you don't have experience saddle-breaking colts the filly deserves a good look. She's pretty nicely built, from what I can see in the picture. I'd personally want to see her hocks a little better, with her standing square on level ground, the right hind looks to me like she might be a bit sickle-hocked, but that could easily be the way she's standing on the icy ground.
Of the two colts, I have to say that the palomino (Buddy) strikes my eye a little better than the buckskin (Booger - Love the name, BTW
, lol). The palomino looks a bit more proportional, and less butt-high than the buckskin. Again, I'd like to see better pictures of them to judge much specifically. Both look like they could be good horses, but its hard for me to say much from the angles that the pics show of them. A picture may be worth a thousand words, but there's no substitute for seeing a prospect in person.
Glad to hear that the search is turning up some good prospects for you, and I can't wait to hear what more experienced critiquers say about these guys.