Bar end mirrors

So after taking a little slide off my bike yesterday I need some new mirrors and bar ends among a few other things. I have been considering bar end mirrors for a while and this seems to be an opportunity to put some on, plus I might actually be able to see behind me rather than just my elbows!

Has anyone here fitted any? If so what did you go for? I’ve seen a range from the £20 up to the £100+ and really don’t have much experience with them so wouldn’t know the difference.

I do like the cafe racer style round ones. It’s to go on my back 696.

Thanks in advance!