Nice to see the variations.
I think the balloon needs to be virtical and not slanted (most flying is virtical orientation unless there is dangerous winds).
The grass should be with a straight line at the bottom, thin thickness, and under the company name and not too much, just a little starting at the tree and getting smaller toward the right. I see you are using the grass as rolling hills, but we think it conflicts with the straight words (the company name and slogan) and we want to keep the words in a straight line.
I think the wind curls may be distracting so not those, but your #42 is the best one. With the changes to the grass, making the mountains perhaps layered forward to give depth, and make the total design area more rectangle than square - spread the clouds out more (not more of them just more spread out). Your blue "FUN is part of LIFE!" is good.
Thanks for your artistic efforts.