I agree with most of the comments about jacket length, etc.
Overall, they all look stylish and better put-together than most folks out there. And I applaud bachelor #1 for the bold pants color. That said, it doesn't quite work for me. I don't know if imageconsultant is right that they're too loud, or if it's the combination with the dark jacket. Regardless, he ends up looking unbalanced to me. It might work better with a lighter blue or a gray jacket.
I absolutely agree with imageconsultant about the way bachelor #2's matching navy tie - a great tie, by the way - and slacks draw the eye directly down into his crotch. Not good. Extra credit to all three guys for the pocket squares.