Someone else asked on XDA Malaysian thread about this as well. Taobao seems dodgy to me, even so because I don't understand anything on the site and the translated version doesn't make any sense.

Ringke fusions finish isn't great. The edges were quite sharp in the one my friend owned. Or maybe that was a defected piece.

One of these spigen ultra slim ones apparently scratches the phones edges.
Reply from Spigen CS below.

Diana replied: Hi Nick!

Thank you for the update!

Just to let you know, since the Nexus 5 Ultra Fit has a polycarbonate finish, it will tend to scuff your Nexus 5 phone. It is not only from our cases that causes these scuffs, but all polycarbonate cases will scuff the edges of your phone

I am very glad to hear that you are using the Neo Hybrid, as the black rubber TPU will not harm your Nexus 5!

I have looked into your order, and it looks like Amazon has refunded your product order! Again, thank you for letting us know, and I will take this up to our management.

Have a wonderful New Year!

Best Regards, Diana

https://tpu-cases.com/