I think they're all very pretty and cute, but not particularly masculine? More like a small corsage for a little girl. To that end I think I like the third best. The first one is very stylized and almost cartoonish, which I think I like, but not for a grown man. The buttons on the second one are very cutesy; I would like it better without them. I do LIKE all of them, the first couple just don't seem very dark/vintage/romantic/Spanish like your other stuff.
~Jenna

Good point! They don't have a "manly" appeal to them and I will have to dig around the internet to see if I find any with that type of look. Luckily I will have some help this weekend!

To be honest, the last one was my favorite -- kind of quirky, but not "kiddish" - you know? I might end up leaning towards quirky. Hmmm... BUT, you have made me VERY curious to see if there are any "Spanish" looking boutonnieres... hmmm...

You could definitely make the third one look more Spanish using your colors. Some others I like are here: http://blog.invitationconsultants.com/2009/05/unique-boutonnieres.html

The one with the fluorescent yellow is not the best color, but I looked at the maker's Etsy site, and I LOVE these: http://www.etsy.com/view_listing.php?listing_id=20082585 The black and the feathers is superdramatic and very vintage glam.

Haha, did you see the banjo one?! Hilarious! I could make a "Spanish guitar" one... juuuust kidding :)

I think incorporating red will do the trick. Maybe making a red, ruffled flower as one component but pairing it with *gray* for a more masculine look. Plus, the guys are wearing gray suits!

I like the colors in the second one, but the buttons make it a little feminine. I found this tutorial on Martha Stewart (I'll probably end up making these!) that I thought I'd share with you!
http://www.marthastewartweddings.com/article/fit-to-be-tied?page=4&backto=true&backtourl=/photogallery/paper-and-fabric-flowers#slide_16

This is the finished product! :)
http://www.marthastewartweddings.com/photogallery/paper-and-fabric-flowers#slide_16

Those are really nice Jenn! They have a sophisticated but "different" look to them. I will have to test out my ribbon-flower making skills this weekend. Thank you for the pass along -- I really appreciate it :)