Thanks for ranking #167 . Many designers are going for 6-sided designs, where as #167 is 5-sided and contains the 6th piece in the centre. The most important part of a network. The shield shape also diplays an air of confidence, reliability and trust.
Design #215 is making use of roman numerals 'VI' instead of a straight '6'. It is traditionally used in the past, but I have given it a modern twist. It is an abstract shape, and still conveys '6'.
Please supply any feedback if possible. Thanks, Muz :-)