Hi, I am finally going to retire my Dior sunglasses that I've had for about a year. I am in the hunt for new ones but I am not sure if the 'big' sunnies trend is staying.. I don't want to spend $200-$400 in sunglasses that might end up not being in style in 2 months. I have seen a couple of oversized aviatior style ones that I really like, what do you guys think is the safest, most fashionable way to go? TIA!