glad u asked the question... white 125 symbolises the stars and universal feel within the type, which i feel is what you're looking for, 129 represents the same aspect in a more abstract symbol.... its an endless loop symbolizing the life (soul) and at the same time,shows the up and down, which one is able to gauge through astrolife. if u were to notice it also indicated the 'chaughadiya' which symbolises dasha... awaiting feedback
also would like to stress that all these would work well on smaller/ smallest scales as well... i see some of the top ranked one might create problem for you to scale it down, to say...feicon level...