“I don’t tend to spend a lot on them as I either lose them, (mostly) scratch them or break them so getting a nice/expensive pair seems like a false economy.”
This, exactly.
I think the most I’ve spent is £40, but my riding glasses are now £12 Ebay jobs. Polarised, photochromic lenses. I’ll just replace with the same when they get damaged or scratched.
The only time I treated myself to some expensive Smiths glasses (I was in France on holiday feeling flush), I left them behind at a rugby tournament.. Found some replacements the same on Ebay, so bought them and crashed wearing them on the bike and now they have a big scuff on one lens!
This lens distortion bollocks cheap glasses are supposed to have, as mentioned in reviews of £200 glasses on this site, is utter nonsense.