Wow, I'd love to have a bunch of pairs to choose from! Maybe I should start a kitty for this :)
I tend to hold onto a pair for several years. I have a hard time finding something that really fits me, so I don't tend to change. My latest pair cost $500.00 after my employee discount. So, I plan on getting my money's worth!
For years I have had a regular pair and a pair of dark glasses. I decided to not use the frame for my dark glasses any more and keep looking for something else that I'd love. I'm so attracted to the fun, funky Fysh glasses, but they are all too wide for my face.