I like your monogram the best. It is very original and interesting. I would want to make several small changes to it to make it perfect. For example, I think the monogram should be slightly bolder, but not too much - maybe appearing in two colors would help - I'm not sure. To me, the #2 ranked design is laid out nearly perfectly - but I'm drawn to your monogram.
I am having an incredibly hard time picking between #1 and #2. I am going back and forth between both. The monogram in #1 is my favorite but the overall design and layout of the font is perfect in #2. This is going to be a hard 45 minutes.