Yes, the dotted lines are much smaller in
#15, and perhaps more importantly, the horizontal dotted line is not there - the logo looks better without the horizontal line. For skyline ideas, see the unique skyline logo of condodomain [.] com (please do not copy their logo, simply use it as an idea to generate unique thoughts). In terms of Boston specific skyline, the most notable highrises in Boston are the Hancock Tower, Prudential Center, and 111 Huntington - if you need pointers to any of these, please advise. On colors, the use of red is very nice, also, the blue and green used in
#16 really pops.