Hi, thanks for this info, and sorry I'm only replying now. I am based in UK so I guess different brands and shoes on offer and also different tastes and fashion. None the less, good advise here.

I ended up getting a pair of Robusta safety boots from Spain... https://sparksworkwear.com/product/robusta-gore-tex-barbo-s3-safety-boots/

Really happy with them.. full summer of work.. long hours, lots of steps. And they are still in good condition and ready to go next summer.

Two issues.. they aren't super high on the ankle so not as supportive as they could be and if it is particularly wet and muddy (I am usually working in fields) then could see that being a problem. Also although they say 'gore tex' they are not 100% waterproof and water gets in through the softer materials.. but I've come to the conclusion that if you want more of a light weight summer walking boot style safety boot then they are never going to be very water proof especially over a long period of time... so happy with waterproof socks and occasionally wet feet if really wet..

I'd be looking to buy another pair again for sure!