I have both the Tesco ones and polished stainless steel ones .. they are unused and I have yet to fix them to the car. Can't decide (a) which ones of the two I prefer (b) whether I want to fix them at all as I will also be fitting chrome mirror caps.
The stainless ones are very nice, but heavier and will require a sturdy method to fix them to the car as I'm not sure self adhesive tapes will be strong enough.
You are welcome to have one or t'other, depending on which ones I decide to keep, for a modest cost (less than what I paid for them).
... ps
Chinchillabug has them fitted to his car so you can ask how they are faring. Check this post ...
Tesco chrome number plate surrounds