#46 looks good, can you try more vibrant colors or do it two colored as in #31.
#23 we like the idea and concept, but we feel that the font doesn't really fit into that logo.
#47 is great idea, can you try to make the "bubbles" fit a little bit more in the whole concept, maybe also drop the string around the planet.
#49 we like that one the most, but still don't think it is the right one, i think this design is too hard to use on clothes.