I can't decide! So here's my dilemma... I have a Samyang 7.5...Oly 17 1.8...Oly 75 1.8. I know I must buy the 12 2.0 which I intend to next month hopefully. In the meantime I'm trying to decide on what prime to get to fill the gap between the 17 and 75. I was debating between the obvious choices like the 25 and the 45 but, based on what I have, couldn't decide which would get better regular use. For example I wonder how much use the 45 would get with the 75 just sitting there??? I tend to shoot mostly travel and street and I like to pack light! So what would be your next prime based on this? Any advise is welcome...tks.