Thanks, all look cool :) About #42 - we would prefer white background, and maybe another color variation. Interesting about the perspective view - in #41 the JM looks like it's "arriving", in #40 it's "going away"... can't decide which one is better. But concerning color combinations - for sure we prefer the blue one. Just an idea - what about enlarging the dot image a little, and putting the company name to the bottom?
Please also don't put any other texts than company name into the logo, and maybe with another font - it's not that it doesn't look good, but this one is used too much nowadays...