I would like to see #54 with a little bit smaller image (less like a cone)... and more like a real green... Change the color on TOURS to be something that is a little easier to read against that dark blue background.
Entry #52 is a very interesting concept. Perhaps the flag could form the hole of the R? It would need to take on a slightly different shape and the R would likely need a serif on the top left in order to allow for the flag to be shorter. I like negative space logos, but they do have to be very well executed to be effective. Also, I'm not a fan of the font used as it is quite tall.