Argh, just out of curiosity I opened up Amazon to take a look at round sunglasses and instantly got tempted! I had no idea these were so popular.
Vintage, generic, goth, Janis Joplin like, steampunk, lots of interesting models, even in pink, cyan, gradient colors.
Ended up deciding against buying from Amazon, it seems the frame material is shabby at best.
I'll purchase from local eyeglass stores instead where I can ensure their quality.
So far the models that appeal to me are the black Dolce & Gabbana - DG2155 and the silver blue Ray-ban - RB1970.
Purchased the RB1970. Directly from the manufacturer and it was 20% off too!
I'll consider the DG2155 in the future, it's a bit more expensive but it's pretty much the de-facto #Xenia sunglasses, so I definitely want to have one at some point.